"In respect of any acts in respect of specific objects embodying protected subject matter which become infringing under the terms of legislation in conformity with this Agreement, and which were commenced, or in respect of which a significant investment was made, before the date of acceptance of the WTO Agreement by that Member, any Member may provide for a limitation of the remedies available to the right holder as to the continued performance of such acts after the date of application of this Agreement for that Member. In such cases the Member shall, however, at least provide for the payment of equitable remuneration."
The WTO Agreement became applicable to the United States, as it did for all developed countries, on 1 January 1996. The date on which the United States "accepted" the WTO Agreement was 30 December 1994. Under the terms of Article 70.4, acts that were commenced or for which a significant investment was made before the date of acceptance of the WTO Agreement by the United States can serve as a basis for enjoying limited liability in respect of infringement of a patent whose term was extended through operation of Article 70.2 of the TRIPS Agreement. Section 154(a)(3) recognizes acts that occurred six months after the date of passage of the legislation - which is five months and nine days after the WTO agreement was accepted by the United States. To our knowledge, this grant of a minimal amount of additional time has not had a commercial effect.