The Suntory and Toyota International Centres for Economics and Related Disciplines The Economic Theory Concerning Patents for Inventions Author(s): Arnold Plant Reviewed work(s): Source: Economica, New Series, Vol. 1, No. 1 (Feb., 1934), pp. 30-51 Published by: Wiley-Blackwell on behalf of The London School of Economics and Political Science and The Suntory and Toyota International Centres for Economics and Related Disciplines Stable URL: http://www.jstor.org/stable/2548573 . Accessed: 21/10/2012 20:08 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . Wiley-Blackwell, The London School of Economics and Political Science, The Suntory and Toyota International Centres for Economics and Related Disciplines are collaborating with JSTOR to digitize, preserve and extend access to Economica. http://www.jstor.org [FEBRUARY The EconomicTheoryConcerning PatentsforInventions1 By ARNOLD PLANT in theUniversity (ErnestCassel Professor ofCommerce ofLondon) for inventions comprise a special form of I. PATENTS property,createdby statutelaw. In the United Kingdom,for instance,patents " sealed with the seal of the Patent Office [which] shall have the same effectas if it were sealed withthe Great Seal of the United Kingdom, and shall have effect throughoutthe United Kingdom and the Isle of Man " are grantedunderthePatentsand DesignsActs, I907 to I932, every patent relating to one inventiononly and having a durationof sixteenyearsin the firstinstance; subjectto fulfilmentof theconditionslaid down in the Acts. 2. The statutescreatingpatents in the various countries imposelimitationson the exerciseof the propertyrightswhich theycomprise,but these are not the only peculiaritiesof this formof property.Despite the limitations,propertyrightsin patents are more potent than is generally true of private of privatepropertyin theeconomic property.The significance was enunciated system long ago with great clarityby David in the Principlesof Morals. his Hum; Enquiry Concerning Property,he argued,has no purposewherethereis abundance; out of the scarcityof the it arises,and derivesits significance, objectswhichbecomeappropriated,in a worldin whichpeople desire to benefitfromtheirown work and sacrifice. Systems ofJustice,he wenton, protectpropertyrightssolelyon account of theirutility. Where the securityof propertyis adequately assured, propertyowners generally see to it, that scarce " means " are directedto thoseuses which,withintheirknowledge and judgment,are most productiveof what theywant. Such is the diffusionof privatepropertyand of the desire to use it, thatit is at any rate generallytrue that thereis not a 1Substantiallya paper read beforeSectionF of the BritishAssociationat Leicester, SeptemberI933. 30 I934] ECONOMIC THEORY CONCERNING PATENTS 3I ofownership ofthesuppliesof a parsufficient concentration alternatives for ticulargood,and ofall theeasilysubstitutable it,to enabletheownersto controlthe pricesof theproperty nor the disposalof the theyown. Neitherthe withholding, property of any one ownerwill in generalaffectappreciably in question. Hitherto,thisinthe priceof the commodity ownersto controlpriceshas beengenerally abilityofproperty approved.If we exceptrecenttendenciestowards" planned withproperty rights mostproposalsto interfere monopolies," theconcentration of havebeenaimedin thepastat prohibiting undera singleownership, commodities suppliesof particular ownersfromraisingtheprice in orderto preventtheproperty bywithholding partof thesupply. of propertyrightsin patents(and 3. It is a peculiarity copyrights) thattheydo not ariseout of the scarcityof the Theyarenota consequence objectswhichbecomeappropriated. of scarcity.They are the deliberatecreationof statutelaw; of privateproperty and, whereasin generalthe institution of scarcegoods, tending(as we makesforthe preservation looselysay)to lead us " to makethemostof mightsomewhat makepossible rightsin patentsand copyright them,"property of a scarcityof the productsappropriated which the creation be maintained.Whereaswe mightexpect couldnototherwise wouldnormally thatpublicactionconcerning privateproperty of theraisingof prices,in these be directedat theprevention cases the objectof the legislationis to conferthe powerof raisingpricesby enablingthecreationof scarcity.The beneis madetheowneroftheentiresupplyofa productfor ficiary whichtheremaybe no easilyobtainablesubstitute.It is the thathe shallbe placedin a position intention ofthelegislators to securean incomefromthemonopolyconferred upon him thesupplyin ordertoraisetheprice. byrestricting creatingthesepatent 4. It maybe assumedthatthestatutes and copyright monopolieswould not have been placed, or allowedto remain,upon thestatutebooksin theabsenceofa of publicadvantagefromtheiroperawidespreadexpectation tion. Economistshave of recentyearsfoundnew difficulties of the of monopolyuponthemagnitude in statingtheeffects stillbroadlyaccepted nationalincome,but it is nevertheless ofthe conditions tendto promotethediversion thatmonopoly froma moreto a less generally scarcemeansof production to reviewthe therefore, utilisation.It is of interest, preferred of thosewho approveof the patentsystem,to expectations 32 ECONOMICA [FEBRUARY and theextent ofthoseexpectations, considertheimplications expectations Are those been realised. they have to which have been devices which ? Are the in themselves reasonable their opera? Has appropriate adoptedfortheirrealisation may not which consequences in objectionable tion resulted havebeenforeseen ? 5. As we have seen,thepurposeof patentsforinventions periodover is, bygivingan inventor thecontrolfora definite tomakeiteasierforhimtoderive thedisposalofhisinvention, an incomefromit. Withwhatobjects? As soonas we enter of motive,we are, of course,venturing intoan examination I and debatable ground.It will,nevertheless, uponuncertain aimis toencourage agreedthattheultimate think,be generally and hope of the expectation inventing.This is undoubtedly advocatesofpatents.The aim thevastmajority ofdisinterested themselves or not,is to of all advocates,whetherinventors makeinventing paybetter,and thoseat anyratewhoare not as a consequence.Even inventors hope formoreinventions of the patentsystemwho would describe thosesupporters wouldprobably theirargument as purelyethicalin character qua invenagreethattheirultimateconcernis thatinventors, mayarguethattheir tors,shouldbe enabledto survive.Theyare notrobbed concernis to see thatproducersof inventions ofthatwhichoughttobe,evenifitmaynotbe in commonlaw, in inventors is verylikely theirproperty;andyettheirinterest beliefthatinventions are derivedfroma morefundamental and utilisathattheproduction especiallygood in themselves, to be encouraged, and that ought,therefore, tionofinventions theway to attainthatend is to extendthe sphereof private of" inventing," and so as to increasetheprofitability property as comparedwith other of inventions, of the exploitation the to attribute therefore, occupations.We aresurelyentitled, invention. existence ofthepatentlawtoa desiretostimulate of thepatentsystemon 6. In orderto examinetheeffects necessaryfirstof all to ask what inventionit is, therefore, thattakesplace,and we theamountof invention determines of " invention."To give muststartwitha workingdefinition ita wideenoughmeaning-muchmorecomprehensive, bythe way,thanthatto whichpatentlaw has cometo be appliedis thedevisingofnewwaysofattaining invention givenends. stillfurther, We mightwidenthedefinition by includingthe as inventions, of newendsthemselves devisingor suggesting but thiswouldprobablyinvolvetoo greata departurefrom I 934] ECONOMIC THEORY CONCERNING PATENTS 33 ordinaryusage. We may all agree that a new machine for makingcigarettesis an inventionbut thata suggestionforthe in favourof somethingelse abandonmentof cigarette-smoking is not. If we definiteinventionas the devisingof new ways of attaininggiven ends it will be best to make the " given ends" as concrete as possible by excluding from the categoryof invention" any change in consumers'taste. 7. This somewhat comprehensivedefinitionof invention enables us to include, as we surely must, all new ways of attaininggiven ends, althoughmanymay not be immediately, if ever, adopted. A new device, employinga recentlydisscientificprinciple,may be mechancoveredand revolutionary ically excellent,and yet not capable of commercialexploitation. The time and extentof its adoption will depend upon price conditions. Changes in relativeprices may lead to the abandonmentof one much utilised process and the substitutionofanother,devisedlong since but neverbeforeadopted. 8. A usefuldistinctionhas been drawnby ProfessorPigou betweendifferent typesof change in economicconditions(and has been applied to inventionsby Dr. J. R. Hicks), distinguishingthose which are "autonomous," occurringspontaneouslyratherthan in response to any environmentalimpulse, from those which are " induced " by environmental to circumstance.Differchangesand owe theirorigintherefore the relativeimportent writershave assessed verydifferently ance, as regards their number,of inventionswhich fall into these two categories,and when we carrythe analysis a step withinthesecondcategory, and attempta classification, farther, of the variouscircumstanceswhichmay induce invention,still more differenceof emphasis is revealed in the views of the variousauthorities. 9. Spontaneous or " autonomous inventions include thosewhicharise fromthe existenceofwhatProfessorTaussig calls the " instinctof contrivance." So far as these are concerned, necessityis not-the motherof invention; the act of inventingratheris a necessityin itself. The inventorcannot help it. Just as some people, who may never be recognised as poets,continueto pour out volumesof verse,so othersmay spend theirtime or part of it in devising contrivancesor-inventions. Sir Josiah Stamp in his stimulatingessay on Invention(Watt AnniversaryLecture,Greenock,I 928, reprinted in SomeEconomic FactorsinModernLife)inclinesto theviewthat the flowof inventionis largelyexplained in this way. 'The 34 ECONOMICA [FEBRUARY he says,' is stillsuigeneris, and emergesfromtheranks inventor,' of engineers,physicists, and chemists,notindeedas a " sport," but as a special product,which is touched by no " economic spring." The sense of curiosityand the idea of fame play a greaterpartthanthe economicreward.' Not all of the inventors, however,whose output is involuntary,are impervious to prospectsof gain. Like artists,somemayturntheirtalentto profitableuse. The amountand rateof flowmaybe invariable, but its directionmaybe influencedby inducementsof one sort or another. Inventingmay be spontaneous,but the natureor formthatit takes may be controlledby circumstance.It will probablybe generallyagreed thatthe numberof" involuntary inventors" whoseoutputis completelyunaffected by economic conditionsis at least as small as thatof artistswho workwithout regardto the saleabilityof theiroutput. More definitelyin the categoryof " spontaneous" inventionsare thosewhichare made by accident,forthe most part no doubt as the chance by-productof activitydirected to some otherpurpose. Every scientificworkerknows how frequentlyan enquiryleads to discoverieswhichanswerquestions fromthose which promptedthe investigation. verydifferent Undoubtedly, in the field of invention,contrivancesare accidentallyhit upon in the same way; but in all probability, the majorityof these "chance" inventionsare also indirectly " induced "-one stage removed,as it were-for the greater part of the activityout of which they arise is influencedby circumstance.Of a somewhatsimilarcharacter,again, are the inventionsof" amateurs" who,wheninspectingthespecialised techniqueof a particularfieldof production,being prompted by curiosityratherthan hope of gain, are enabled by their unusual possession of experienceof some other technique to and new devices which fail to occur to suggestimprovements the minds of practitionersthemselves. The timing,at least, of such inventionsis undoubtedlylargelyfortuitous. I0. Induced inventionsowe at any rate their nature, if not theirvolume,to the circumstancesof timeand place. One the amountof inventionsis clearly verypotentcause affecting the rate of growthof scientificknowledge. The greaterthe volume of new scientificdiscoveries,the more rapid will become the rate of applicationof these discoveriesby inventors to purposes of production. Inventiondoes not, of course, wait upon the completionof scientificdiscovery. As William Edward Hearn wroteseventyyearsago, in what is surelystill I 934] ECONOMIC THEORY CONCERNING PATENTS 35 the best theoreticaldiscussion" Of the Circumstanceswhich ch. xi): Determinethe Extentof Invention" (in his Plutology, " The knowledgethatis imperfectforthe purposesof speculaguide forthe daily business of life." tion is oftena sufficient "Even at the presentday," he adds, "many processesof our most successfulartshave not yet receiveda scientificexplanation.... But in all empiricalarts,the limitof improvementis soon reached." I I. A second influenceon the nature,if not on thevolume, of new inventionis specialisationand the divisionof labour. The specialisationwhich has been made possible by the greatincreasein the numberof scientificworkershas in itself discovery. Similarly, tended to increase-the rate of sc'ientific the divisionof labour in productionhas exertedan influence on invention.Adam Smithmade thepointperhapstoo forcibly (WealthofNations,Book I, ch. i) when he observedthat " the inventionofall machinesby whichlabouris so muchfacilitated and abridged,seems to have been originallyowing to the division of labour." W. E. Hearn and, followinghim, W. S. bothcriticisedtheextravagance Jevons(PrinciplesofEconomics) of Smith's language, calling attentionto the number of important inventionswhich have emanated from unexpected quarters. Yet theydid not denythe obvious truththatspecialisation in product and the division of labour make possible the detailedconsiderationof technologicalprocesses,and that inventionsof new processes do arise out of such continuous and intimate considerationof detail. Whether there is in consequence a net addition to the volumeof invention,as distinctfroma change in its nature,is anothermatter. I 2. It is true that the growingmechanisationof industry withdrawsever more of the active and trainedminds from actual machine operation and may in that way reduce the numberof inventionsthat would otherwisebe made in that field,but it would be a veryincompleteaccount of the effects of the division of labour on inventionthat stopped there. Specialisationhas, of course, released the more able and ingenious and mentallyalertworkersfromroutinetasks forthe performanceof just such special tasks as inventing. It has made possible the career of professional" inventor." It has moreoverresulted in the increased wealth of communities, which has made possible the increase of knowledge by the endowmentof research,and the spread of knowledgeand the trainingof abilityby the endowmentof education. These in 36 ECONOMICA [FEBRUARY turnhave increasedon theone hand thefieldforinvention,and on the otherhand, the numberof activeinventors. I3. Increasingwealth,the divisionof labour, the progress of science, then, are clearly circumstanceswhich induce in thesevariouswaysthe inventionof new processesand devices. It remainsto add anothercircumstance,which provides the incentiveforthe making of particularinventions,and thatis the existenceof favourableprice conditions. Dispute there maywell be as to the effectof price changes,and of the consequent emergence of new opportunitiesfor profitand new probabilitiesof loss, on thevolumeof inventionthattakesplace as a whole in a given period,but as to the importantdirective influenceof price conditionsupon by far the greaterpart of inventiveeffortthere can be no doubt at all. Hearn wrote: " The principal circumstancewhich affectsthe progress of inventionsis thestrengthofthemotivefortheiruse. When the demand is sufficiently strong,the supply generallyovertakes it. . . ." The price conditionswhich induce inventionin particularfieldsare those which offera special returnto inventorsin those fields. The inventionsmay be induced either by the possibilityof quite exceptionalprofitsto thosewho can cut costs stillfurtherduring times of flourishing trade,when an industryis alreadyprofitable, or by theimminenceofcertain loss to entrepreneurs who have fixedinvestmentsin industries which are depressed,and whose only hope is an innovation which will reduce expenses below receipts. During the postwar years,forinstance,inventionshave been induced by price conditionsin both the coal industryand the rubberindustry on the one hand, and in the motor-carand radio industrieson the other. I4. Hitherto,the interestof economistsin the relationbetween inventionsand industrialfluctuationshas been concentratedmainlyon thepartplayedby inventionsin the causation of fluctuations.(Cf., e.g. Mr. D. H. Robertson's Study of IndustrialFluctuations,and Professor Pigou's Industrial Fluctuations.)The problemof the reverseeffectsof business fluctuationson the flowof inventionsis a no less fascinating subject of study,about whicha numberof unarguedand contradictorystatementshave been made. It is importantto distinguishbetweenthe makingof an inventionand its adoption. Sir JosiahStamp,in the paper alreadyreferredto, says: "On the whole I inclineto the view thatthe periodsof rapid and importantinventiontendto be periodsoflargerdifferential 1934] ECONOMIC THEORY CONCERNING PATENTS 37 profits."The view is not supportedin the paper by evidence or argument. ProfessorPigou in his IndustrialFluctuations (ch. iv, p. 43) is concernedmainlyto refutethe proposition that fluctuationsin generalbusinessactivitymay be initiated by variationsin the rate at which ordinaryminor inventions and improvementsare made. He argues that even in the case of major inventionsit is the decisionto exploitinventions ratherthanthemakingof theinventionsitselfthatis themajor cause of disturbance,the time and intensityof exploitation being largelydeterminedby the state of business confidence. " There is," he says," .... a strong probability that invention as a whole will fluctuateverymuch less than inventionin any given representative occupation,"-i.e. he implies that there is a transfer of inventiveactivityfromone industryto another, expansionsin one fieldbeing compensatedmoreor less by declines in inventionelsewhere; and he states definitelythat " thereis evidence thatin slack periods technicaldevicesand improvementsaccumulate in the sphere of knowledge, but are not exploitedtill timesimprove." The natureof the evidence is not stated. It presumablyrelates to the statistics concerningthe rate of exploitationratherthan of invention itself. Such an accumulationof inventionsduringdepressions is compatiblewithincreasing,stationaryor decliningabsolute ratesof invention,being purelyrelativeto the rateof exploitation, which one might reasonably expect to decline when businessconfidenceis at a low ebb. It is of interestto notice, however,that elsewherein the same study (p. I2) Professor Pigou asserts that "in periods of depressionthe amount of intelligence put into productionis, in general, larger, partly because relativelyinefficient business men are compelled to sell out to others,but mainlybecause those who remainin business 'are put on theirmettle,and exertthemselvesto the utmostto inventimprovedmethods,and to avail themselves of the improvementsmade by others."' This would imply an increased rate of both inventionand exploitationduring depressions,at leaston thepartofthosewho remaininbusiness.' 1I cannot trace any attempthithertoat statisticalinvestigationof the relationship betweendisturbancesin industrialactivityand variationsin the rate of invention. ProfessorPigou, having in mind, of course, the reverseconnection,considersthat "it is not in fact possible to demonstratea close statisticalcorrelationbetweenthe making of industrialinventionsand neighbouring disturbancesin general industrial activity." That may wellproveto be true. I am myselfmuchdisposedaftersomewhat close and prolonged study to hope that the detailed recordsof patent applications availableovera long periodin thisand othercountriescan be made to throwlighton thisand the otherrelatedquestions. The returnsare availableseparatelyfordifferent 38 ECONOMICA [FEBRUARY I5. In the meantimecertainconclusionsmay be hazarded thateverypricechange, concerninginducedinventions; firstly, in certainfieldsand opportunities by creatingcost difficulties in others,providesa double stimulusto inforprofit-making vention,and secondly that the larger the price change the greaterwill be the stimulusto invent. Thirdly,duringperiods of disturbanceof the general level of prices, a more general stimulusto inventionsand to theexploitationof existinginventions may be expected, for we know that individual price relationshipsare disturbedwhenever,for monetaryreasons, the general price level shifts. Fourthly, any government measures designed especially to reward inventors,whether by subsidisationor by the patent system,i.e. the grant of monopolyrightsover the utilisationof theirinventions,may be expected,because of theirinfluenceupon price conditions, to affectthe flowof inventions. It is with the patent system thatwe are here primarilyconcerned. Despite the publication of a large body of specialist literature,in the nineteenth centuryin particular,on the meritsof patent systems,they have received scant attentionby economistsin the standard treatises. I 6. The patentsystemmay,on the one hand, be expected to affectthe makingof inventionsin two ways. The firstis to divertinventiveactivityintothosefieldsin whichthemonopoly grantwill be expected to prove most remunerative.It may, secondly,affectthe total amount of inventiveactivity. The patentsystemmay, on the otherhand, exerciseanothereffect of perhaps equal importance. It may influencethe abilityor willingnessof entrepreneursto make use of new inventions aftertheyhave been made. I7. It will be convenientto considerfirstthe effectof the patentsystemon the amountof inventiveactivity. Considerable differenceof opinion on this aspect of the question is revealed by the scant referencesmade by economistswho go out of theirway to praise the patentsystem. On the one hand thereis the view,perhapsbest representedin our own timeby categoriesof industry(in thiscountry,forinstance,over a long period,thereare I46 categories),thoseconcerningprovisionalapplicationsprovideexcellentevidenceof the date at which inventionsare made, and the subsequenthistoryof the patentscan be used fora studyof the timingof the ac-tualexploitation. In particularinstances,the influenceof adversityas well as of prosperitywithinan industryupon the display of inventiveness can easily be tracedbeyondreasonabledoubt. With due care it may be possible also to draw conclusionswith regard to the relationbetweenthe display of and industrialfluctuationsin general. The work is progressing,but inventiveness further discussionmustbe reservedforanotheroccasion. I 934] ECONOMIC THEORY CONCERNING PATENTS 39 Professor J. B. Clark in his Essentialsof EconomicTheory (ch. xxi), thatwithoutthe patentsystemtherewould be very littleinventing,and verylittleadoptionof inventionsby producers, at all. " If an inventionbecame public propertythe momentthat it was made," he says, " therewould be small profitaccruingto any one fromthe use of it and smallerones frommakingit.... The systemwhichgave a man no control overtheuse ofhis inventionswould resultin a rivalryin waiting to distanceothersin originating forothersratherthanan effort improvements.This factaffordsa justificationforone variety of monopoly. . . . Patents stimulateimprovement,and the general practiceof the nationsindicatestheirrecognitionof view we may thisfact." For the expressionof a verydifferent and Money-Makers), turnto ProfessorF. W. Taussig (Inventors who throwsdoubt upon what he designatesas the view of the older utilitarians,that " men contrivedsimply because this was conduciveto gain,and would notcontriveunlessprompted by the experienceand prospectof gain," and suggestsinstead that inventionmay arise mainlyas a spontaneousmanifestation of a human " instinctof contrivance." If this is so, "we may be led to conclude," he adds, althoughit is not his conclusion, "that the patent system,for example, is a huge mistake." Later, he observes that " the defendersof patent legislationoftendescanton thepublicbenefitfrominventionsas iftherewerea special moraldeserton thepartof theprojectors and patentees. They put their case badly. What deserves emphasisis the influenceof calculatedprofitin directingthe inventor'sactivity,spontaneousthoughit be, into channelsof generalusefulness." The patentsystemis commendedbecause it directsratherthan increasesinventingactivity. Professor Pigou puts the same view still more definitely(Economicsof Welfare,2nd edition, Part II, chapter viii): " The patent laws aim, in effect,at bringingmarginalprivatenet product and marginalsocial net product more closely together. By offeringthe prospectof rewardforcertaintypesof invention theydo not, indeed, appreciablystimulateinventiveactivity, which is, for the most part, spontaneous,but theydo direct it into channelsof generalusefulness." The only supporting evidenceis a referenceback to ProfessorTaussig. I8. The economistsof the early nineteenthcenturywho consideredthe question were as definiteas ProfessorJ.B. Clark that inventionswould practicallycease if the patent systemwere abandoned. JeremyBenthamwas in no doubt at 40 ECONOMICA [FEBRUARY all (RationaleofReward): " With respectto a greatnumberof inventionsin the arts, an exclusive privilege is absolutely necessaryin order thatwhat is sown may be reaped.... He who has no hope thathe shall reap will not take the troubleto sow." JohnStuartMill's argumentwas similar. (Principlesof Book V., ch. x, s. 4.) As ProfessorTaussig PoliticalEconomy, assumedthatthepatentsystemwas responsaid, theutilitarians sible forthe greaterpart of inventingactivity. The question which they one and all failed to ask themselves,however,is what these people would otherwisebe doing if the patent system were not divertingtheir attentionby the offerof monopolisticprofitsto the task of inventing.By what system of economic calculus were theyenabled to conclude so definitelythatthegain ofanyinventionsthattheymightmakewould not be offsetby the loss of otheroutput? By no stretchof the imaginationcan the inventingclass be assumed to be otherwise unemployable. Other product which is foregonewhen scarce factorsare diverted in this way completelyescaped theirattention. In the view of Bentham,the patentsystem" produces an infiniteeffect,and it costs nothing." Jean Baptiste Say, although subsequentlymore critical,made a similarmistake in his Traite(Prinsep translation,Book I, ch. xvii): " Privileges of this kind no one can reasonablyobject to; for they neither interferewith, nor cramp any branch of industry, previouslyin operation." The withdrawalfromthemof scarce resourcesis ignored. To John Stuart Mill, again, the only public loss was merelythepostponingofa partofthe increased cheapnesswhichthe public owe to the inventor. Manufacturers,although some of them were inventors themselves,who gave evidenceadvocatingthe abolitionof the patent system before a Select Committeeof the House of Lords in I 85 I, were no doubt enabled by self-interestto perceivethelossmoreclearly.-I. K. Brunel,forinstance,believed thatbecause of the patentlaws people spent theirtime trying to invent,who would do betterforthemselvesat otherthings. In particular,he maintainedthat workerswasted theirtime and ruined themselves,tryingto thinkout patentableinventions,when developmentwould be much quicker if theywere and refinenot thus distractedfrommaking improvements, mentsof a non-patentablekind. In the 'sixtiesJamesStirling, famous in anotherconnectionfor his rebuke of John Stuart Mill at his capitulationto a sentimentally" soft school of I934] ECONOMIC THEORY CONCERNING PATENTS 41 political economy," emphasised the dangers of an overstimulationof inventionsby the patent system. Yet at the beginningofthiscenturyProfessorJ.B. Clarkwas stillwriting: "If the patentedarticleis somethingwhich societywithouta patentsystemwould not have secured at all-the inventor's monopoly hurts nobody. . . His gains consist in something which no one loses, even while he enjoys them." No inkling herethatthepatentinducementto inventdivertsscarcehuman effort fromotherproduction,and thatthe subsequentexploitaof tion patentsagain interfereswith the dispositionof scarce factorswhich would obtain under competitiveconditions. I 9. If the views of ProfessorsTaussig and Pigou, thatthe amountof inventiveactivityis in the main unaffectedby the inducementofferedby patent monopolies, come to be substantiated,the traditionalcase for the systemwill have been destroyedwithoutfurtherneed for criticism; but it would surely be unreasonable to accept their view withoutstrong supportingevidence. It seems unquestionablenot only thata veryconsiderablevolume of inventiveactivitymust definitely be induced by price conditions,but also that that activityis divertedby price movementsfromother types of endeavour as well as fromotherfieldsof invention. Entrepreneursfaced or with new opportunitieswill divertnot with new difficulties only theirown attention,but thatof everytechnicianwho can be spared, fromthe business of routineproductionto thatof urgentinnovation. They will not relyexclusivelyupon those typesofprofessionalinventorswhoseautonomousoutputpours out in a streamof unvaryingsize, and some of whom may be whichtheentrepreneurs prepared,inreturnfortheinducements can offer,to transfertheirspontaneousactivityto theirservice. It cannot be assumed that all who are capable of innovation spend theirwhole lives in inventing. Many of them are also able administratorsand productioncontrollers; some in the past have been clergymenand barbers,and in our own time thereis a steadyflowof techniciansfromthe researchlaboratoriesof pure scienceintothoseof industrialinventionand out again. Price changes, particularlyif prices appear likely to take a new "set," may thereforebe expected to lead to an increaseof inventionand a decline in otheractivity. The patentsystemmakes possible this typeof price movement. It enables thosewho have the monopolyof the rightto use a patentedinventionto raise the price of using it for the whole termof the patent,withinthe limitsfixedby the elas- 42 ECONOMICA [FEBRUARY ticityof demand,and in-thatway to derivea largerprofitfrom the inventionthan they could otherwiseobtain. The effect must surelybe to induce a considerablevolume of activityto be divertedfromotherspheresto the attemptto make inventionsofa patentabletype. 2o. It will be convenientat thisstage to considerbothkinds of diversiontogether,i.e. from other kinds of activityinto invention,and fromone kind of inventiveactivityto attempts to make such patentableinventionsas will, in the expectation of the inventoror of those directinghis efforts, produce the greatestpossible remunerationunder a regime of monopoly. It will be recollectedthatProfessorsTaussig and Pigou declare the meritof the patentsystemto be the inducementit offers for the productionof inventionsof greater" general usefulness " thanwould otherwisebe made. It will be clearfirstofall thatthereis one class of inventions, on the makingof which the patentsystemcan exertno effect at all, namelythosearisingspontaneously, whetherby accident or as manifestations ofan " instinctof contrivance,"in persons whose inventingis uninfluencedby all economicstimulus. It is hardlylikelythatthisclass is veryimportantin volumeor in kind. The makingof all othercategoriesof patentableinventions may, however,be induced by the patentsystem. It does not follow, of course, that they will necessarilyall be made in response to this inducement,for in the absence of patentsa sufficientprice incentivemight be present,in open market conditions,to directinventiveactivityto the same field; but in so far-asthe inducementis furnishedonlyby the expectation of a patentmonopoly,a diversionof resourcestakes place and other productionis foregone. What grounds are there for concludingthatthe outputinduced by this typeof monopoly has any greaterclaim to be regardedas " generallyuseful" thanthatwhichwould have been induced in its absence by the price conditionsof the open market? I suggest that such a conclusionrunscounterto all generalpresumptionsconcerning the dispositionof scarce productiveresourcesin a r6gimeof monopolistic control as contrastedwith open competition. The nearerthatmarketconditionsapproximateto pure comor petition,the less likelydoes it become thatany entrepreneur propertyownerwill findit possible to influencepricesby withholding supplies, and the more likelyin consequence does it becomethatall resources,beingput to theuses whichmaximise I934] ECONOMIC THEORY CONCERNING PATENTS 43 the incomesof theirowners,will yieldtheirgreatestaggregate product. In perfectcompetitionall productionwill take place at lowest cost per unit produced. How can it be argued that any departurefromsuch a condition,induced by the grantof monopolypowerto raisepricesand increasea sectionalincome byrestricting output,willachievegreater" generalusefulness"? The onlyconceivablelineforsuchan argumentto takewould seem to be that ultimately the inventionsof a patentabletype which will be made in responseto the grantof a temporary monopolywill possess a sufficiently greatergeneral-usefulness than would resultfromthe other inventionsor otheroutput immediatelyforegone,to outweighthe immediateloss. There surelyexistsno scientificreasonformakingany such claimfor patentableinventionsin general,as comparedwith alternative output. It is conceivablethat exceptionalcases may arise, in which a new mechanism becomes socially desirable for a specificand veryspecial purpose,and thatprolongedresearch and experimentseem inevitablefor its perfection,while no remunerationis likelyto be forthcoming in the interimfrom modelswhichare notwhollysuccessful. In such cases, special inducementsmight be necessaryto secure the end in view. Thus, forexample,ifa flyingmachinewere needed capable of non-stopflightsroundthe Equator, and machineswithsmaller ranges were of no utility,entrepreneurs mightnot be forthcomingand theremightbe a case fora special fundto finance the making of the invention. A patent systemapplicable to inventionsin general clearlycannot be justified,however,by exceptionalcircumstancesof this kind. Economics, in short, has not yet evolved any apparatus of analysis which would enable us to pronounceupon the relativeproductivity of this particularinfantindustry-the productionof inventions; nor does it provideany criteriaforthe approvalof thismethodof special encouragement. The contentionstillremainsforconsiderationthatthe 2I. patentsystemis necessaryin orderto secure the exploitation, ifnottheproductionofinventions.The mainargumentis that will be reluctantto investin plantwhichothers entrepreneurs may also acquire for purposes of competition. It need not detain us for long. It cannot be assumed that patentable inventionsin generalnecessitatenew investmentin such large unitsthatfearsof duplicationwill providea frequentdeterrent to entrepreneurs.It is stillexceptionalfora singlespecialised productiveunitto be sufficient to meetthe bulk of thedemand 44 ECONOMICA [FEBRRUARY fora product. Neithercan it be assumed thatinventorswould lost the monopolyover cease to be employedifentrepreneurs theuse of theirinventions.Businessesemploythemto-dayfor the productionof non-patentableinventions,and theydo not do so merelyfor the profitwhich prioritysecures. In active competition,the condition in which new devices are most promptlyimitated,no business can affordto lag behind its competitors.The reputationof a firmdependsupon its ability to keep ahead, to be firstin themarketwithnew improvements in its productsand new reductionsin theirprices. A hundredyears ago it was also argued as a meritof the patentsystemthatit providedan inducementto inventorsto make public the natureof theirinventionsso thattheywould eventuallybe generallyavailableforwiderexploitation.When businessesweresmall,and processesmightremainone-manor familyaffairs,secrecy and monopoly might indeed persist longerin open competitionthanunder the patentsystem,just as it is reputed to do still within the Maskelyne familyof conjurers. But the conditionsof industrialproductionhave changed in this respect. With large-scalemanufacture,few valuable processescan now be conductedon so small a scale that prolongedsecrecyis feasible. Possibly-it is a question requiring intimate technical experience-there may exist chemicalprocessesin which the natureof the productdefies and of themethodof manufacture, analysisand reconstruction in which the nature and proportionsof the ingredientscan be maintainedas the secretof a few people; but effectively such cases, if theyindeed existoutside the pages of detective fictionand sensationalliterature,must surelybe exceptional, and unlikelyto be eradicatedby the inducementsof temporary patentprotection. basis of the patentsystemis indeed as 22. If thetheoretical uncertainas this analysis suggests, the actual provisionsof patentlegislationcannotbut be arbitrary.It is impossibleto share JeremyBentham'senthusiasm. To him " an exclusive privilege is of all rewards the best proportioned,the most natural, and the least burthensome." . . . " [A patent] uniteseverypropertywhichcan be wishedforin a reward. It exemplary, characteristic, is variable,equable, commensurable, tocompensation, subservient frugal,promotiveofperseverance, popular, and revocable." I propose to referto a numberof featuresof the patentsystemas it existswhichare of particular relevanceto the precedingdiscussion. I 934] ECONOMIC THEORY CONCERNING PATENTS 45 23. There is firstthe questionof the typesof innovation whichare coveredby the patentlaw. A verygreatdeal of invention goes on outsideits range,withoutanyinducement beyondthatprovidedby theoperations of the open market. One needonlypointto theso-calledfashiontrades,in which therateofinvention reachesprobably itshighestpoint,and to the non-patentable refinements and improvements everyday beingaddedtoall kindsofindustrial product.In thelastthree hundred yearstherehasbeenan enormous amountoflitigation inthiscountry concerning thenatureof" a newmanufacture." To the studentof economicsit makes instructive reading. for "Biological inventions "-innovations in plant-breeding the productionof special types,forinstance,whichare of undoubtedeconomicsignificancein the agriculturaland pastoralindustries-areexcluded.Theymaybe freely adopted by competitors.Yet theycontinueto be made. Medical practitioners, partly no doubton accountoftraditional altruism and partlyas theresultof thelead, if notthedrive,of their professional associations, make verylittleuse of the patent laws; and yetthe workof medicalinvention goes on. The wholefieldofscientific discovery lies outsidethescopeofthe system,althoughinventors and manufacturers mayowe the fortunes theyhavemadefrompatentedproductsin themain to the workersin pure sciencewhosediscoveries theyhave applied. The taskofdistinguishing a scientific discovery from its practicalapplication,whichmay be patentable-as for to themost examplein thefieldofwireless-is oftenbaffling and discontented subtle lawyer. Associationsof interested scientists do notfailto presstheirclaimsforinclusion.There are thenotorious Ruffini forthegrant proposals,forinstance, ofmonopolies toscientists covering theirpublisheddiscoveries. in thefieldof minorindustrial thereis Similarly, inventions, tosupplestrongpressure foran extension ofthepatentsystem, ment the registration of designsby a short-period patent on the protection of particular arrangements of mechanism, linesoftheGermanGebrauchsmuster. How can it be shown " classofinnovations thatthe" patentable possessesso much greaterusefulnessthan all these othersthat it should be speciallyencouraged bymonopoly ? itself.Itoperates ofreward 24. Secondly, thereis thesystem in in favourofonlyone or one groupofthemanyparticipants the progressof an invention fromthe birthof the scientific discoveryto the emergenceof the patentmonopoly.The D 46 ECONOMICA [FEBRUARY scientificdiscoveryitselfmay be the culminationof the researchand of the tentativehypotheses of manyscientific workers:thepossibility of applyingit in a particular device mayoccuralmostsimultaneously tolargenumbers ofindustrial technicians;priorityin the formulation of the provisional patentapplication maybe a matterofdaysor ofminutes.But one application alonecan satisfy therequirement ofthismanmadelaw thatthepatentshallbe grantedto " thefirstinventor,"whoreceivesa monopoly oftheuse ofitforsixteenyears, in thiscountry, withthepossibility ofan extension foranother ten. The grantof a monopolyrendersalmostnugatorythe laboursof all the rest,forany refinements theymaysubsequentlyinventin thistypeofdevicewill,ifpatented, be much reducedin value by the requirement thatacknowledgment shallbe made,in thepatentspecification, oftheprior" invention." Lotteriesin open competition theremaywellbe; but thelottery ofthepatentsystem awardsbutoneprize,andthata whilethosewhosubscribemostofitsvaluemaybe monopoly, precludedfromqualifying fortheprize. The existenceof a monopolyin factoperatesto divertthe attention ofinventors fromwhatmaywellbe themostfruitful fieldforfurther innovation.In the case of inventions which cannotbe patented, a particularly usefuldeviceat onceattracts the attentionof otherspecialistswho seek,maybecompetitively,to refineand improveit and to adaptit to thewidest possibleuse. The blockingeffects ofpatentmonopolies check these surelybeneficialtendencies,;competitors, insteadof helpingto improvethebest,arecompelledin self-preservation to apply themselvesto the devisingof alternatives which, thoughpossiblyinferior, will circumvent the patent. It is a particular case,butone whichis verywidespread, ofthemaldistribution of resourceswhichis consequentupon theexistenceofmonopoly. The termofthepatentgrantmustinevitably be arbitrarily evenifeachinvention determined, wereseparately considered. A fixedperiodofyearsforall and sundryexpediently avoids countlessdifficulties, therangeofwhichmaybe gaugedfrom theefforts ofthecourtstodetermine, inthecaseofapplications forextensions, the" natureand merits" of an invention;in orderto decidewhether thepatenteehas been " inadequately " and theperiod,ifany,forwhichan extension remunerated shall be granted. Economistswill well appreciatewhy the of i862, whichincludedLord Overstone, RoyalCommission I 934] ECONOMIC THEORY CONCERNING PATENTS 47 was stronglyopposed to any extensionswhatever.Yet ifthere were a parallel provision,that any person interestedmight apply at any timeduringthe lifeof a patentforits revocation on the grounds that the patentee was already more than adequately remunerated,some interestinglegislationwould certainlyensue, and the decisions of the Courts, however lacking in principle,mightwell be preferableto the existing fixedminimumterm. 25. Special interestattachesto the provisionswhich have been gradually insertedin the patent laws during the past hundredyearswith the object of mitigating" abuses " of the system,meaningtherebysuch use of the monopolypower as appeared obviouslyin conflictwiththe generalinterest.From the I 840's, side by side withthe movementforthe simplificationofthepatentlaw,therecontinuedfora generationa strong agitationfor the abolition of the whole system. It had the supportof The Timesand of The Economist.The strongRoyal Commission of i 862-4, though precluded by its terms of referencefromdoing morethanrecommendamendments,was clearly opposed to the whole system. Professor Thorold Rogers read two papers against both patentsand copyrights before the British Association in I864 and I865; while carriedon a conMembers of Parliamentand manufacturers tinuous propaganda. The movementwas not confined to England; in thelate 'sixtiesa numberofeconomistsin France, including M. T. N. Benard and Michel Chevalier, wrote against patents; in Germany,Bismarckattackedthe system in I 868 in theNorthGermanFederalParliament; in Holland, thepatentlaw was repealedin I 869. In England, however,the Act of I852 gave suchan impetusto thepatentingofinventions that in the 'seventiesthe attemptat abolition was gradually abandoned in favourof the more easily practicablepolicy of mitigatingits mostobvious evils. The officialexaminersystem of search foranticipationsof new claims was introducedand graduallyextended; the cost of securingpatentswas reduced, forthe benefitof poor inventors,and paymentsreducedin the earlyyearsso thatinventorsshould not be compelledto allow theirprotectionto lapse beforetheyhad had a reasonabletime in which to arrange for the exploitationof their invention. Internationalconventions were arranged to secure more reciprocityin the treatmentof foreign inventions,and to reduce in that way the competitionto which manufacturers under licence were otherwiseliable fromforeignproducers 48 ECONOMICA [FEBRUARY outside thejurisdictionof the laws of this country. I propose in the remainderof thispaper to confinemyselfto two onlyof which have been introducedinto the patent the modifications legislationof thiscountry,viz. thesectionsgoverningthegrant of " compulsorylicences" and the more recentlyintroduced "licences of right." 26. Provision has been made for fiftyyears now for the grantof compulsorylicencesin the eventof certainallegations, which could be made by any person interested,being found by the competenttribunalto be true. From the first,one of thegroundshas been thatthe patentis not beingworkedin the United Kingdom, and that satisfactoryexplanationsof the ofprofailureto do so are notforthcoming.This manifestation inrelationtothequestionofthe particularly tectionis ofinterest, effectof such provisionson the amount of output which the patenteewill findit profitableto produce,but it need notdetain us here.Anothergroundhas fromthefirstbeenthatthedemand forthepatentedarticlein the United Kingdomis notbeingmet to an adequate extentand on reasonableterms. The Board of Trade originally,then subsequentlythe Judicial Committee of the Privy Council, and now the Comptrollerof the Patent Office(subject to appeal to the Courts) have in consequence had thrownupon themthe dutyof deciding,in cases in which the law confersa monopolyupon an inventorin orderthatby restrictingthe use of his inventionhe may derivean income, whetherthe output is " adequate " and the terms " reasonable." The competitiveoutputbeingruledout,whatmonopoly outputand price can be more " reasonable" than thatwhich pays the monopolistbest ? The handlingof this problem by the appointed tribunalsonce more makes instructivereading for the student of economics: but the responsibilityof the tribunaldoes not rest there. It is called upon, in addition,to settlethe termsupon which compulsorylicences are granted. The Royal Commission of I862 had recommendedagainst compulsorylicencespreciselybecause it regardedthe practical of fixingthepropertermsas insuperable. " On this difficulties question of price" theyurged "individual opinions must be would notbe satisfactory expectedto varywidely." Arbitration "where neitherprecedentnor custom,nor fixedrule of any kind could be appealed to on eitherside." The Patents and Designs Acts to-daymake an amusing endeavourto help out the unfortunateassessor by directinghis attentionto certain I 934] ECONOMIC THEORY PATENT S CONCERNING 49 guiding considerations. The firsttwo are worthyof notice here: [Patents and Designs Act, I 907 (as amended) Section24 (I) (b)] "(i) he shall, on the one hand, endeavour to secure,the widest possible user of the inventionin the United Kingdom consistent with the patentee deriving a reasonable advantage fromhis patent rights; "(ii) he shall, on the otherhand, endeavourto secure to the patenteethe maximumadvantage consistentwith the inventionbeing workedby the licenseeat a reasonable profitin the United Kingdom." Possibly those responsibleforthis formulamightbe satisfied if the assessor contrivedto induce both the full competitive outputand the maximummonopolyprofitat the same time. It is enlighteningto examinethe extentto whichsince I 9 I 9 the Comptrollerhas attemptedto interpretthese instructions. applications,manyof By the end of I 93 I, out of less thanfifty whichwere subsequentlywithdrawn,nine grantswereactually made. Three were howeverdischargedon appeal, and in the case of the remainingsix it appears that it was not necessary forthe Comptrollerto fixterms. The same-dutyof fixingterms,failingagreementbetween the parties,fallsupon the Comptrollerin the case of Licences of Right. In the same period, 7,533 patentswere endorsed, but in only seventeencases was an applicationmade for the of terms. At the end of settlement I93I, threeof these applications had been withdrawn,one was suspended -by requestof the parties,and thirteenwere still pending. In no case, therefore,had the Comptroller been persuaded to attemptthe featof followingthe instructionsof the Act. 2 7. Licences ofRightfurnish us withan economiccuriosity. The I 9 i9 Act, presumablywiththe object of inducingmonopolist patenteesnot to restrictso narrowlythe supply of the inventionduringthe lifeof the patent,offersthe remissionof halfthe feessubsequentlypayable to all patenteeswho request thattheirpatentbe endorsed" Licences of Right," the effect be entitledas of rightto a being thatany personmaythereafter licenceto use the inventionupon termsto be agreed or settled by the Comptroller. The large number of endorsements7,533 to the end of I93 i-is striking,although of course a smallpercentageof the totalnumberof patentsin forceduring 50 ECONOMICA [FEBRUARY being the period(about 20,000 new completespecifications addedeachyear). The factthatin all casesthelicencefeehas bythe recourseto arbitration without beenfixedbyagreement wouldsuggestthatthepatenteesecuresa royalty Comptroller fromthatwhichhe believeswill adjustthe not fardifferent totaloutputto the amountwhichmaximiseshis monopoly profit. of thattheadjustment If we wereto maketheassumption volume of output to given price conditionstakes place havebroadlythesameprofirms and thatdifferent promptly, ductioncosts,thepositionwouldthenbe thatthevolumeof outputwouldremainmoreorlessthesameas thatwhichwould emergeunderthe ordinarypatentsystem,whilethe patent half its revenueto littlegood officewould have forfeited is concerned.We cannot, public general the as purpose,so far firms costsofdifferent production that either assume however, are identical,or thata sole licenseewill rapidlyexpandhis outputand sales to the pointof maximumnet revenue. It appearsveryprobablethatthe Licence of Right therefore byenablinganyproducerto tryhishandat producing system, the operationof competitive the patentedarticle,facilitates whichhavelowest outputin thefirms forcesin concentrating overa ofproduction therapidspreading costs,and encourages so thattheaggregateoutputis in fact numberof producers, increasedmorerapidlyto the pointof maximummonopoly profit(if the patenteefixeshis termsto his best advantage) be likely(ifitdoesnotin factexceedthat thanwouldotherwise amountfora time,to thelossofcertainlicensees).This device servesto increaseoutput,forwithoutit the certainly -almost wouldprobablynotas rapidlydecideto grantas monopolist manylicencesto theproducerswhosecostsare lowest. so injuringthe monopolist'sinterest, Without,therefore, himself he at the point toremain longas licencetermscontinue selects,thelicence-ofrightsystemtendsto correctone ofthe i.e. theslownessofthe tothepatentsystem, objections practical it articles. If, therefore, of patented of the output expansion wouldconassumedthattheComptroller couldbe reasonably to evadethealarmingtaskof fixingterms, tinuesuccessfully the therewould be muchto be said in favourof modifying patentsystemso that licencesof rightbecamethe normal inwhichthedevicewas first practice.In thecaseofcopyright, applied,theproblemof termscouldbe settled-ifcrudelyofso muchpercent.ofthepriceofthebook a royalty byfixing 1934] ECONOMIC THEORY CONCERNING PATENTS 5I or gramophonerecord or piano-rollas the case might be. So simple a solutionis hardlyapplicable to inventions,and if disputes between patentees and licensees became frequent rule would need to be devised. some other rough-and-ready 28. Expedients such as licences of right, nevertheless, cannotrepairthe lack of theoreticalprinciplebehindthewhole patent system. They can only serve to confinethe evils of monopolywithinthe limitscontemplatedby the legislators; and, as I have endeavouredto show, the science of economics as it stands to-dayfurnishesno basis of justificationfor this enormous experimentin the encouragementof a particular activityby enablingmonopolisticprice control. There is to-daywidespreadalarmat thatincreasinglyrapid rate of obsolescence of industrialequipment,which is the reverseaspect of the quickeningof technicalprogress. Everywherewe encounterthe protestsof ownersof specialisedplant and of specialised workers at -the changes which convert and specialisedskillinto" surpluscapacity." In so far property as the new enterprisescompetefortheirresources,capitaland labour, in open competitionwith existingbusinesses,economistshave stronggroundsforthe presumptionthatthe gains from their success will outweigh the losses. If, however, innovationis especiallyencouraged,to theloss ofotherproduction,by monopolyprice conditions,is it not conceivablethat there may be relatively" too much inventionof the wrong kind," and, in consequence, " too much " obsolescence and displacementof specialisedability? Can it be thatthe patent systemis in partresponsibleforour presenteconomictroubles?
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