A Blog About Intellectual Property Litigation and the District of Delaware


Entries for tag: MILs

License for Thee
AI-Generated, displayed with permission

Maybe it's just me, but pre-trial evidentiary opinions are always fun to read. They often involve rules that don't come up in other written opinions, and all of the rulings tend to be highly impactful for trial (otherwise the parties wouldn't be spending their extremely limited pre-trial time and MILs on the issues).

We got an opinion from Judge Bryson last week on pre-trial evidentiary issues in Acceleration Bay LLC v. Activision Blizzard Inc., C.A. No. 16-453-WCB (D. Del. Apr. 28, 2024). There are a number of interesting rulings in it, but one in particular that is worth calling out involved whether a party can offer evidence of past licenses to prove damages. …

Stick figure breaking a chain
AI-Generated, displayed with permission

All of the sitting judges in the District of Delaware require, in their form scheduling orders, that each party (or each side) may file no more than three motions in limine.

But winning a MIL can really change the scope of trial by precluding key evidence or arguments. In complex patent cases, parties very often want more (sometimes many more) than three MILs to shape the trial in their favor.

One common attempted solution is to merge multiple MILs together. Instead of "exclude late-disclosed doctrine of equivalents theory" and "exclude a late-disclosed exhibit related to copying," a defendant might file a MIL entitled "exclude untimely theories and evidence" that relates to both of those things, …

Audio Player
Firmbee.com, Unsplash

Motions in limine can feel like some of the most impactful-feeling motions in the case. Unlike most motions in our busy federal courts, they are typically addressed very quickly, and almost always by the judge handling trial. They are also normally addressed immediately prior to trial. As such, even if the MIL is denied, the issues presented in the MIL may remain at the top of the judge's mind and can influence the direction of the trial (and make subsequent objections easier).

We got an example of that yesterday in Personal Audio, LLC, v. Google LLC, C.A. No. 17-1751-CFC (D. Del. Sept. 5, 2023). In that case, Chief Judge Connolly granted a post-trial JMOL …

Split Cup
Tania Melnyczuk, Unsplash

Most judges in the District of Delaware limit the parties to three motions in limine per side. Visiting judges sometimes permit more, but I get the sense that this limit is something native D. Del. judges generally don't want the parties to change when submitting a proposed scheduling order.

But I can't recall a patent case where the parties did not use all of their motions in limine, and want more (even if they didn't ask the Court). These evidentiary issues can just have a large effect on trial. Plus, with a mountain of work bearing down on you in the leadup to trial, it's great to think you might knock out some opposing …