In actions alleging infringement of a process patent based on the importation, sale, offer for sale, or use of a product which is made from a process patented in the United States, if the court finds—
(1) that a substantial likelihood exists that the product was made by the patented process, and
(2) that the plaintiff has made a reasonable effort to determine the process actually used in the production of the product and was unable to so determine,
(Added Pub. L. 100–418, title IX, § 9005(a), Aug. 23, 1988, 102 Stat. 1566; amended Pub. L. 103–465, title V, § 533(b)(7), Dec. 8, 1994, 108 Stat. 4990.)