A Blog About Intellectual Property Litigation and the District of Delaware


Entries for tag: fre-403

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Jamie Street, Unsplash

Motions in limine can be kind of exciting. The motions and the rulings are typically short, and they are ordinarily filed with the pretrial order just before trial. Unlike most motions, the Court usually rules on them quickly (between the PTO and the trial), sometimes live at the pretrial conference, and the impact is felt almost immediately.

Plus, orders that result from MILs can sometimes have a huge effect on the practical course of the trial by precluding important arguments and evidence, or even by interfering with your trial themes—frequently at the last minute. So it's worth keeping in mind the kinds of things that may come up at the MIL stage.

Last week, Judge Andrews …

Judge Andrews yesterday issued his opinion denying all post-trial motions in TQ Delta, LLC v. 2Wire, Inc., C.A. No. 13-1835-RGA (D. Del.). The jury had returned a verdict of infringement and no invalidity after a trial in January 2020.

One part of the opinion stands out—Judge Andrews discusses his decision to preclude the defendant from discussing the full prosecution history of the patent before the jury as prejudicial under FRE 403:

I ruled that 2Wire could elicit testimony about what prior art was in front of the patent examiner, but that testimony about a “lengthy history of cancelling claims, adding claims, rejecting claims, [and] rejecting new claims” was inadmissible under Federal Rule of Evidence 403 because …