105 STAT. 2594 PROCLAMATION 6307—JUNE 24, 1991 (1) A patent shall confer the right to prevent others not having the patent owner's consent from making, using, or selling the subject matter of the patent. In the case of a patented process, the patent confers the right to prevent others not having consent from using that process and from using, selling, or importing at least the product obtained directly by that process. (2) Where the subject matter of a patent is a process for obtaining a product, each Party shall provide that the burden of establishing that an alleged infringing product was not made by the process shall be on the alleged infringer, at least in one of the following situations: (A) the product is new; or (B) a substantial likelihood exists that the product was made by the process and the patent owner has been unable through reasonable efforts to determine the process actually used. In gathering and evaluation of evidence to the contrary, the legitimate interests of the defendant in protecting his manufacturing and business secrets shall be taken into account. (3) A patent may only be revoked on groimds that would have justified a refrisal to grant the patent. (iii) Exceptions Each Party may provide limited exceptions to the exclusive rights conferred by a patent, such as for acts done for experimental purposes, provided that the exceptions do not significantly prejudice the economic interests of the right-holder. (iv) Term of Protection Each Party shall provide a term of protection of at least 20 years from the date of filing of the patent application or 17 years from the date of grant of the patent. Each Party is encouraged to extend the term of patent protection, in appropriate cases, to compensate for delays caused by regulatory approval processes. (v) Transitional Protection A Party shall provide fransitional protection for products embodying subject matter deemed to be unpatentable under its patent law prior to its implementation of the provisions of this letter, where the following conditions are satisfied: (1) the subject matter to which the product relates will become patentable after implementation of the provisions of this letter; (2) a patent has been issued for the product by the other Party, or an application is pending for the product with the other Party, prior to the entry into force of this letter; and, (3) the product has not been marketed in the territory of the Party providing such transitional protection.
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