In the recent Solvay v. Honeywell (PDF) decision, the Federal Circuit dealt with the issue of who qualifies as a prior inventor for the purpose of 35 U.S.C. § 102(g)(2). In particular, this case concerns an invention that was invented in Russia but later duplicated in the United States (“U.S.”). One key invalidity inquiry here is whether an invention first invented in a foreign country and then later duplicated in the U.S. qualifies as § 102(g)(2) prior art on the date of duplication (or re-invention) in the United States.
Fact Summary
Solvay sued Honeywell for infringement of Solvay’s U.S. Patent No. 6,730,817 (“the ’817 patent”). The patent claims methods of making non-ozone depleting fluorinated hydrocarbons. Compounds derived from the claimed methods are used as blowing agents for polymers such as expanded foam insulation. These compounds are valuable because the Montreal Protocol (PDF) on alleviating the ozone-hole problem required phase-out of all ozone depleting chloro-fluoro-hydrocarbons (CFCs) from the marketplace.
Leaving aside the infringement arguments in this discussion, Honeywell argued that some of the asserted claims in the ’817 patent are invalid for anticipation under 35 U.S.C. § 102(g)(2). Priority date of Solvay’s ’817 patent is October 23, 1995. According to Honeywell, Allied Signal (Honeywell’s predecessor) made the claimed invention before Solvay’s priority date. The controversy over Allied Signal’s alleged invention date stems from Honeywell’s assertion that the invention was first made in Russia in 1994 under a research contract, and later duplicated in the U.S. in 1995 by Allied Signal.


