Cheese Systems, Inc. v. Tetra Pak Cheese, No. 12-1463 (Fed. Cir. Aug. 6, 2013)

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.

In this declaratory judgment action, the United States District Court for the Western District of Wisconsin granted the summary judgment motion of Tetra Pak Cheese and Powder Systems (Tetra Pack Cheese) and Treval Laval Holdings & Finance S.A (Treval Laval) (collectively, Tetra Pak) against Cheese Systems, Inc. (CSI). In an unpublished fifty-four page opinion, the trial court determined that CSI infringed under the doctrine of equivalents and had not proven the ’347 patent invalid. Cheese Sys., Inc. v. Tetra Pak Cheese and Powder Sys. , Inc.