"In my expert opinion, the patents are really valuable. The plaintiff told me so!"AI-Generated, displayed with permission
Exclusion of damages opinions are a frequenttopicforourblog. Daubert motions to exclude expert opinions tend to have a higher success rate than other types of Daubert motions, and it's worthwhile to have a good understanding of where the pitfalls lie, whether you are helping an expert draft a damages opinion or considering challenging one.
Yesterday, the Court granted a Daubert motion to exclude a damages opinion in a patent case. The expert relied on prior licenses to other patents from the same inventor to support his reasonable royalty opinion for the patents-in-suit. That requires showing that the prior …
Back in 2021, Chief Judge Connolly instituted a new ranking procedure for summary judgment motions in his cases, in which parties rank their SJ motions and, if the top-ranked motion is denied, all lower-ranked motions are denied as well. The Court later expanded that procedure to encompass Daubert motions as well. Judge Williams has adopted it (for SJ motions only), and Judge Noreika has experimented with it—although at least one other judge has declined to adopt it.
To put the procedures in context, judges on the Court have long applied various measures to control the workload generated by summary judgment motions. Former Chief Judge Sleet, for example, required parties to request leave before filing summary judgment …
We've writtenbefore about how delay can kill your discovery motions. We got another straightforward example on Monday in Novartis Pharmaceuticals Corporation v. HEC Pharm Co., Ltd., C.A. No. 20-133, D.I. 340 (D. Del. Mar 31, 2025).
There, the defendants sought depositions of two foreign inventors through the Hague convention. The defendants have known the relevance of the inventors' knowledge since at least July, 2022, but only moved for issuance of letters rogatory in December 2024.
The case was stayed for a portion of that time, but in total, the Court found that there was no good reason that it should have taken so long to seek this discovery:
My name is Lindsey Gellar, and I am an associate at Shaw Keller, posting for the first time here. Yes, Andrew has finally managed to rope another lackey (associate) into writing for the blog. Today, I'm going to look at what it takes to plead equitable defenses in the District of Delaware.
When it comes to pleading most affirmative defenses, the bar is on the floor. An affirmative defense does not need to be plausible to survive; it must merely provide fair notice of the issue involved. Internet Media Corp. v. Hearst Newspapers, LLC, C.A. No. 10-690-SLR, 2012 U.S. Dist. LEXIS 126788, at *7 (D. Del. …
I'm not sure why the AI image generator made the judge so much bigger than the traffic they are directing, but it seems somehow appropriate.AI-Generated, displayed with permission
I've noticed, and heard from others, that it seems like there were a lot of new case filings in the District of Delaware this month.
I was curious if that's true, so I did some unscientific research based on how many PACER new-case e-mails I've received. So far, for March 2025, I've seen 127 of these. That's more than any of the 16 prior months, only one of which broke 100. And it's quite a bit more than the 49 I received in January, or the 74 I received in February.
March of last year (2024) was busy as well, with 97 such e-mails. But, even if we get no more filings today or Monday, this year's number will top last year's by more than 30%.
Of course, not all cases are the same. A litigation campaign by an NPE against many defendants is very different from a true competitor patent litigation. From a quick review, the filings this month look like a mix of both. And these include a mix of various other civil filings, not just patent cases. So it's hard to say just how big of an increase in actual workload it may be.
The blog has many stories about the perils of over-redaction. Time and again the Court has chastised the parties for attempting to redact quotidian bits of agreements and correspondence, noting that the Court is not a "Star chamber."
Today's case, Inkit, Inc. v. Airslate, Inc., C.A. No. 23-793-RGA (D. Del. Mar. 26, 2025), shows that it's also possible to redact too little. The parties thereby had a long-running dispute about trademark infringement which ultimately evolved into a dispute about whether the defendant had violated a settlement agreement which resolved an earlier case between the parties.
That settlement agreement—like literally every other one I've ever seen—contained a confidentiality provision. The issue that arose is that, in …
Local Rule 37.1 seems to often be forgotten. It requires a party bringing a discovery motion (which would include a discovery dispute) to recite or attach the discovery request or responses they are moving about:
Any discovery motion filed pursuant to Fed. R. Civ. P. 26 through 37 shall include, in the motion itself or in a memorandum, a verbatim recitation of each interrogatory, request, answer, response, or objection which is the subject of the motion or shall have attached a copy of the actual discovery document which is the subject of the motion.
Claim narrowing is such a common issue in Delaware that this blog has at least 431 entries with the tag.
(Eds. Note—I did not actually count, but you can click on the tag on the side and scroll down to prove me wrong).
I told it to draw a nerd, but it actually kind of looks like me...must be something wrong with the algorithm.AI-Generated, displayed with permission
Ironically this rich well of precedent can make it kind of hard to brief a dispute on claim narrowing. A dozen cases can be cited for any proposition you might want, which can make it hard to argue for one outcome over another -- especially to a judge that has seen similar disputes so many times before.
Judge McCalla's opinion last week in Aortic Innovations, LLC v. Edwards Lifesciences Corp., C.A. No. 23-158-JPM (D. Del. Mar. 20, 2025), was thus a breath of fresh air as he writes unencumbered by a wealth of his own words on the issue.
In the opinion (which cites to a truly remarkable number of prior Delaware orders on the issue), he dealt with 3 relatively common questions in the district.
First, the parties disputed whether the plaintiff should narrow from 31 asserted claims down to 18 or 15 (I'll let you guess who was proposing which). Judge McCalla went with 18, citing Judge Fallon's Order in Twinstrand Bioscis., Inc. v. Guardant Health, C.A. No. 21-1126-GBW-SRF (D. Del. Oct. 18, 2022), which stated that “a reduction to approximately 20 claims by the deadline for service of final infringement contentions” is “consistent with other case narrowing order[s] from [the District of Delaware].”
In looking for something to write about today, I happened across Local Rule 9.2, which governs requests for a "Three-Judge District Court":
RULE 9.2. Request for Three-Judge District Court.
If a party believes a civil action or proceeding must be heard by a three-judge district court, the notation “Three-Judge District Court Requested” or the equivalent shall be included on the front page immediately following the title of the first pleading filed in such action or proceeding. The basis for the request shall be set forth in the pleading or in a brief statement attached thereto. The words “Three-Judge District Court Requested” or the equivalent on a pleading is a sufficient request under 28 U.S.C. § 2284. …
Some among you will appreciate this joke. Others, baffled.AI-Generated, displayed with permission
Judge Andrews had a fun opinion yesterday on an issue that does not come up very much at all.
The plaintiff in Pioneer Hi-Bred Int'l Inc. v. Syngenta Seeds, LLC, C.A. No. 22-1280-RGA (D. Del. Mar. 19, 2025) dropped their infringement claims after claim construction. Rather than dismissing the case, they moved for partial summary judgment and asked Judge Andrews to enter final judgment so that they could appeal the otherwise dispositive Markman order.
The defendant, however, wanted to proceed to an invalidity trial, and thus opposed the entry of a final judgment. Judge Andrews declined to enter final judgment, noting that allowing appeal …
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