Ball Metal Beverage Container Corporation v. Crown Packaging Technology, Inc., decided June 30, 2025

This nonprecedential opinion from the United States Court of Appeals for the Federal Circuit details an appeal in the case of Ball Metal Beverage Container Corporation v. Crown Packaging Technology, Inc. The core issue revolves around patent infringement, specifically concerning Crown's double seaming technology used in beverage cans. The district court had previously ruled that certain claims of Crown's patents were invalid due to indefiniteness, meaning the patent claims were not clear enough to inform those skilled in the art about the scope of the invention. The Court of Appeals affirmed this decision, agreeing that different methods for measuring a key claimed angle in the patent led to materially different results, thus rendering the claims indefinite.  See the case summary: https://www.cafcnewsbriefs.com/post/ball-metal-beverage-container-corporation-v-crown-packaging-technology-inc-decided-june-30-2025