The Federal Circuit's 2008 decision in O2 Micro Int'l Ltd. v. Beyond Innovation Tech. Co., 521 F.3d 1351, 1362 (Fed. Cir. 2008) comes up frequently in patent cases. Its holding is sometimes shorthanded as "you can't argue claim construction to the jury" or "the Court must construe claim limitations if they are disputed."
Judge Noreika rejected one such shorthanding of the 02 Micro rule today, pointing out that the actual O2 Micro ruling is more nuanced than parties sometimes think:
Defendant asserts that “when parties dispute a term appearing in the body of the claims, it must be construed.” (D.I. 90 at 2 (citing O2 Micro . . . )). That statement of law is incorrect. Rather, the Federal …