Tag: Terms of Approximation

The Federal Circuit’s decision in Enviro Tech Chemical Services, Inc. v. Safe Foods Corp., Case No. 24-2160 (Fed. Cir May 4, 2026), adds another important chapter to the growing body of indefiniteness law applying Nautilus to “terms of approximation” such as “about,” “approximately,” and “substantially.” In a precedential opinion authored by Judge Lourie, the court…