Historical development of patentable invention
14 Business, commercial and financial schemes as such have never been considered patentable (J Lahore, "Computers and the Law: The Protection of Intellectual Property" (1978) 9 Federal Law Review 15 at 22-3, approved in CCOM Pty Ltd v Jiejing Pty Ltd (1994) 51 FCR 260 at 292) in the same way that the discovery of a law or principle of nature is not patentable. Sir Robert Finlay A-G observed in Re Cooper's Application for a Patent (1901) 19 RPC 53 at 54, '[y]ou cannot have a Patent for a mere scheme or plan - a plan for becoming rich; a plan for the better government of a State; a plan for the efficient conduct of business'. A law of nature becomes patentable when applied to produce a particular practical and useful result (Welcome Real-Time SA v Catuity Inc (2001) 113 FCR 110 at [117]). While a mere scheme or plan is not the proper subject of a patent, an alleged invention which serves a mechanical purpose that has useful results does not become such an unpatentable scheme or plan merely because the purpose is in the carrying on of a branch of business (Re Fishburn's Application (1938) 57 RPC 245 at 248).
15 Historically, working directions and methods of doing things fell outside s 6 of the Statute of Monopolies. As summarised by Heerey J in Catuity at [106], directions for the operation of a known article or machine or carrying out a known process so as to produce an old result were not patentable, even if they provided a different and more efficient method. Patents were refused for operating a jet engine in a way to reduce noise during takeoff (Rolls Royce Ltd's Application [1963] RPC 251); improved methods for charcoal burning (Commissioner of Patents v Lee (1913) 16 CLR 138); improved methods for utilising an existing mechanism of septic tank purification (Neilson v Minister of Public Works (NSW) (1914) 18 CLR 423); and a method for felling trees by use of fire (Rogers v Commissioner of Patents (1910) 10 CLR 701).
16 Patents have also been refused for methods of calculation, theoretical schemes, including business schemes and abstract plans, such as:
· systems for arrangement of known things, such as a plan relating to the layout of houses in a row or terrace so as to prevent overlooking (Re ESP's Application (1944) 62 RPC 87);
· an arrangement of buoys for navigational purposes (Re W's Application (1914) 31 RPC 141);
· a system of business even though its implementation involved the use of a printed envelope with a particular arrangement of words (Re Johnson's Application for a Patent (1901) 19 RPC 56 at 56); and
· a method of preventing the fraudulent re-use of sales book dockets and books used in that connection (Re Brown (1899) 5 ALR 81).
17 The advent of computers has resulted in an elaboration of the concept of methods as patentable inventions: see Catuity at [118]-[122].
18 In the United Kingdom, Graham and Whitford JJ considered claims for computer programs. In Burroughs Corp (Perkins') Application [1974] RPC 147 and International Business Machines Corporation's Application [1980] FSR 564 their Lordships distinguished claims to a business scheme or intellectual information as the product of the conception of an idea, which are not patentable, from claims to methods which in practice (and whatever words are used in the claim) result in a new machine or process or an old machine giving a new and improved result which, applying NRDC, are patentable. The distinction drawn was between mere intellectual information and a method that affected the operation of an apparatus in a physical form. When the method is practiced in a way that is embodied in a physical form it is a manner of manufacture. There must be more than 'a mere method or mere idea or mere desideratum' (Burroughs Corp Application at 160). Their Lordships declined to decide whether it was necessary that there be an artificial end product or effect. If this does exist it is patentable because the method affects the operation of the apparatus.
19 In International Business Machines Corporation v Commissioner of Patents (1991) 33 FCR 218 at 224 Burchett J, in considering the patentability of a method and apparatus for producing curves on computer graphics displays, emphasised "useful effect" in distinguishing between discovery of a principle and the making of an invention. His Honour applied NRDC and considered the use to which the claimed algorithm was applied, namely to the operation of steps by computers to achieve an end in the production of an improved curve image.
20 A physically observable effect was also present in the claims in CCOM, in the retrieval of graphical representations of desired characters for the assembly of text.
21 In State Street Bank & Trust Co v Signature Financial Group Inc 149 F 3d 1368; 47 USPQ 2d 1596 (Fed Cir 1998), the United States Court of Appeals for the Federal Circuit held that a business system, a data processing system utilising a mathematical algorithm for implementing an investment scheme, constituted a practical and concrete application. This involved the transformation of data by a machine through a series of mathematical calculations to provide a share price fixed for recording and reporting purposes. The Court was careful to emphasise that a mathematical algorithm, formula or calculation was not patentable but the transformation of data by a machine that produced a useful, concrete and tangible result was patentable.
22 The United States Court of Appeals revisited the subject of patentable subject matter in the context of the manipulation of numbers in the field of computer technology in AT&T. The basic proposition was repeated, that a mathematical formula alone, viewed in the abstract, is unpatentable subject matter. As had the United States Supreme Court in Diamond v Diehr 450 US 175; 67 L Ed 2d 155 (1981), the Court of Appeals reaffirmed the principle that laws of nature, natural phenomena and abstract ideas are excluded from patent protection. The Court cited its earlier decision In re Alappat 33 F 3d 1526; 31 USPQ 2d 1545 (Fed Cir 1994) in which it explained the 'straightforward' concept on which previous decisions, including State Street were based, 'namely, that certain types of mathematical subject matter, standing alone, represent nothing more than abstract ideas until reduced to some type of practical application' (emphasis in original) (172 F 3d 1352 at 1357; 50 USPQ 2d 1447 at 1451). The subject matter, standing alone, is not entitled to patent protection. The claim was examined to determine whether it was a claim to the principle or to a process that uses the principle in order to produce a 'useful, concrete, and tangible result' (172 F 3d 1352 at 1357; 50 USPQ 2d 1447 at 1451). An application is not limited to a physical transformation, which was said to be an example of a useful application but not an invariable requirement. Where the claimed process did nothing more than take several abstract ideas and manipulate them together, nothing was added that was patentable.
23 Despite the broad terms of the United States Code (35 U.S.C. s 101), the courts of that country have held that abstract ideas, laws of nature and natural phenomena are outside the categories of patentable invention until reduced to some type of practical application (Diehr, State Street, Alappat). The same tests apply for patents for business methods as for any other claimed invention. The distinction was between the employment of an abstract idea or law of nature and the idea or law itself.
24 In Catuity, Heerey J distinguished between an abstract idea, a method of calculation or a business method (in the sense of a particular method or scheme for carrying on business) which his Honour described as non-patentable and a claim to a method and device for use in business, that is a practical operation of an abstract idea. His Honour drew a distinction between a technological innovation which is patentable and a business innovation which is not. His Honour did not accept that a physically observable effect was necessarily required, although he held such an effect was present in Catuity. While the development of US patent law is derived from the Constitution of the United States rather than the Statute of Monopolies, as Heerey J observed at [129], the policy behind the two provisions is the same. In both jurisdictions, the courts have confirmed that a broad approach to subject matter should be taken in order to adapt to new technologies and inventions but that does not mean that there are no restrictions on what is properly patentable.