A Blog About Intellectual Property Litigation and the District of Delaware


Entries for tag: Marking

Here's an AI-generated patentee dealing with the burden of proof on marking.
Here's an AI-generated patentee dealing with the burden of proof on marking. AI-Generated, displayed with permission

My co-blogger Nate wrote yesterday about Magistrate Judge Hall's discussion of prior art estoppel in Innovative Memory Systems Inc. v. Micron Technology Inc., No. 14-1480-RGA (D. Del. Sept. 29, 2022). That was actually just one issue the Court dealt with in a lengthy R&R and Order on a summary judgment and Daubert. I wanted to post about one of the other issues Judge Hall addressed in that opinion: patent marking.

Marking is an important and sometimes underrated issue. It's not uncommon, in patent cases, for the bulk of the damages to have accrued in the years prior to the plaintiff …

It's fairly common for plaintiffs in Delaware to plead infringement by alleging that the defendant infringes "at least claim x," of the relevant patent—leaving the question of what other claims might be asserted until later in the case.

In line with the Federal Circuit decision in Disc Disease Sols. Inc. v. VGH Sols., Inc., 888 F.3d 1256, 1260 (Fed. Cir. 2018), many of our Delaware judges have explicitly endorsed this practice. See, e.g. Promos Techs., Inc. v. Samsung Elecs. Co., Civil Action No. 18-307-RGA, 2018 U.S. Dist. LEXIS 186276, at *6 (D. Del. Oct. 31, 2018) ("Plaintiff does provide details of at least one claim allegedly infringed under each asserted patent. Therefore, Plaintiff's identification of infringed …

Wolf
Wolf in the Forest, Philipp Pilz, Unsplash

I don't have the full transcript, but based on quotes set out in a letter filed by the parties, Judge Connolly recently set forth his thoughts on the kinds of issues he is willing to address early in the case:

Now, what I try to do when I think there's kind of a silver bullet, I move it to the top of the pile. That's what I do on indefiniteness.

According to the letter, Judge Connolly was prepared to stay the case and expedite summary judgment briefing on indefiniteness if it was case dispositive. Defendant declined that offer in a letter after the hearing.

Judge Connolly also suggested that he …