Dyfan, LLC v. Target Corporation, No. 21-1725 (Fed. Cir. Mar. 24, 2022)

From the Opinion

The passage below is extracted verbatim from the opening of the document. It has not been editorially summarized — consult the full opinion for the court's complete reasoning.

Dyfan, LLC appeals from the United States District Court for the Western District of Texas’s final judgment of invalidity of the asserted patent claims. The district court held the claims invalid as indefinite under 35 U.S.C. § 112 ¶ 2 based on its view that certain clai m limitations are in means-plus-function format under § 112 ¶ 6 and that the specification does not disclose sufficient structure corre- sponding to the recited functions.