District of New Jersey Denies Motion to Amend Invalidity Contentions, Citing Defendant’s Lack of Diligence and Timeliness in Filing Motion
In Razor USA LLC v. DGL Group, Ltd., the United States District Court for the District of New Jersey recently denied a defendant’s motion to amend its invalidity contentions to include an additional written description argument. The case involves utility and design patents pertaining to a hoverboard. After learning that the design patent issued with drawings had previously been rejected by the Patent and Trademark Office (PTO) (as opposed to those that the PTO later approved), the defendant sought to add an argument that the design patent was invalid pursuant to 35 U.S.C. § 112(a) for the same reasons that the PTO had previously rejected the published drawings. The defendant asserted that it learned about this “new” defense after the plaintiff’s expert stated in a declaration that he had reviewed the prosecution history of the design patent, which prompted the defendant’s own investigation of the prosecution history. In evaluating whether the defendant’s application met the requirements of Local Patent Rule 3.7, the court looked to the defendant’s diligence and the timeliness of the motion. The court concluded that both were lacking. With respect to diligence, the “dominant consideration” in the motion to amend, the court concluded that the defendant had failed to act with the requisite diligence in discovering the information it sought to add...