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To be valid, a patent's usefulness must be established, whether by demonstration or by sound prediction, at the time of the patent application. Any evidence of utility after this date is irrelevant, regardless of when the patent's validity is challenged. Later proof of an invention's inutility can be
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A patent is addressed to a person skilled in the art, and any prior art and knowledge that such a person would have can be taken into consideration when the patent is being interpreted by the courts. If a patent's scope is so broad that a person skilled in the art could follow its specifications and
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Although utility can be demonstrated by commercial success, it only requires that the invention is directed to a practical use and that it does what is indicated in the patent. The mechanism underlying an invention's function does not need to be disclosed in the patent. If a mechanism is proposed in
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The grant of a patent gives the inventor a monopoly in the market for its product. This monopoly is granted in exchange for the disclosure of the invention which can be further developed by society. The requirement that the invention is useful ensures that society receives accurate and complete
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An invention is useful if it does what it promises; following the directions should result in the desired effect. The inventor does not have to have created the product of the invention, but the specifications must disclose an actual way to do so.
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The utility of an invention can be established by sound prediction where “utility can be predicted in advance of complete testing." This is a question of fact, and there are three prongs to the doctrine:
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The basis for the doctrine of sound prediction is the expedited disclosure of inventions. By ensuring that these inventions are not speculation or misinformation, the public domain remains uncluttered.
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That a patent does not have to be economically useful is justified by the fact that these kinds of discoveries may lay the foundation for more profitable discoveries.
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the patent but is subsequently disproven, the patent is not invalidated.
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Intellectual
Property Law: Copyrights, Patents, Trade-Marks
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Minerals
Separation North American Corp v Noranda Mines Ltd
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Burton
Parsons Chemicals Inc v Hewlett Packard (Canada) Inc
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Intellectual
Property Law: Copyrights, Patents, Trade-Marks
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not get the useful result, the invention is not useful.
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749:Apotex Inc v Wellcome Foundation Ltd
722:Apotex Inc v Wellcome Foundation Ltd
708:Apotex Inc v Wellcome Foundation Ltd
694:Apotex Inc v Wellcome Foundation Ltd
669:(1974), 54 DLR (3d) 711, 1 SCR 555.
655:(1981), 59 CPR (2d) 7, FCJ No 1013.
652:X v Canada (Commissioner of Patents)
603:X v Canada (Commissioner of Patents)
598:Apotex Inc v Wellcome Foundation Ltd
738:, 2d ed (Toronto: Irwin Law, 2011).
641:, 2d ed (Toronto: Irwin Law, 2011).
1038:Canadian intellectual property law
311:Inventive step and non-obviousness
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571:There must be proper disclosure.
120:Manual of Patent Office Practice
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683:(1952), 15 CPR 133, JCJ No 2.
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552:used to invalidate a patent.
360:By region / country
531:, in order to be patented.
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752:, 2002 SCC 77, 4 SCR 153.
725:, 2002 SCC 77, 4 SCR 153.
711:, 2002 SCC 77, 4 SCR 153.
697:, 2002 SCC 77, 4 SCR 153.
417:By specific subject matter
1005:Law School Admission Test
368:Patent Cooperation Treaty
347:Sufficiency of disclosure
326:Person skilled in the art
296:Patentable subject matter
129:Governmental organization
67:Sufficiency of disclosure
43:Patentable subject-matter
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339:Other legal requirements
316:Industrial applicability
164:Canadian patent case law
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910:Intellectual property
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260:Prosecution
255:Application
105:Legal texts
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609:References
425:Biological
265:Opposition
206:Patent law
146:Categories
113:Patent Act
992:Education
925:Trademark
915:Copyright
576:Rationale
440:Insurance
374:Australia
331:Prior art
275:Licensing
270:Valuation
239:Criticism
234:Economics
211:Overviews
937:Maritime
867:Property
857:Contract
852:Criminal
592:See also
481:Glossary
476:Category
458:See also
445:Software
435:Chemical
809:Sources
394:Germany
321:Utility
306:Novelty
229:History
122:(MOPOP)
60:Utility
50:Novelty
965:Appeal
947:Courts
920:Patent
900:Family
525:useful
389:Europe
379:Canada
219:Patent
139:(CIPO)
399:Japan
384:China
370:(PCT)
862:Tort
519:In
450:Tax
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