Estech Systems IP, LLC v. Mitel Networks, Inc., No. 2:21-cv-00473 (E.D. Tex. May 4, 2023)

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.

Before the Court is Defendants’1 Motion for Leave to Serve First Supplemental Invalidity Contentions. Dkt. No. 306.2 For the following reasons, the Court DENIES the motion. I. BACKGROUND On December 3 0, 2021, Plaintiff Estech Systems IP, LLC filed suit for patent infringement of U.S. Patent Nos. 8,391,298 (the “’298 Patent”), 7,068,684 (the “’684 Patent”), 7,123,699 (the “’699 Patent”), 6,067,349 (the “’349 Patent”) against service provider Mitel Networks, Inc.