Expert Report Cannot Be Used for Previously Undisclosed Invalidity Theories
The United States District Court for the Central District of California recently granted a plaintiff’s motion to strike portions of the defendant’s expert report for the untimely disclosure of new invalidity theories that were not previously disclosed in the defendant’s invalidity contentions. In Nichia Corporation v. Feit Electric Company, Inc., the plaintiff sought to strike from the defendant’s expert report: (1) an entirely new reference; (2) two new obviousness theories based on combinations of references not included in the defendant’s final invalidity contentions; and (3) a new written description argument. In ruling, the court highlighted the district’s Standing Patent Rules’ emphasis on “early notice” of infringement and validity contentions, that amendments to contentions require diligence by the moving party and that new infringement and invalidity theories cannot be introduced through expert reports. The Standing Patent Rules that the parties were following were initially set forth by Judge Guilford of the Central District of California. It has been noted that “Judge Guilford’s Standing Patent Rules are similar to the Local Patent Rules adopted by the Northern District of California.” Mort. Grader, Inc. v. First Choice Loan Servs. Inc., 811 F.3d 1314, 1321(Fed. Cir. 2016). And, relatedly, the District of New Jersey “adopted verbatim [its] Local Patent Rules from the Northern District of California.” TFH Publ’n, Inc....