D. Delaware

U.S. District Court for the District of Delaware — Patent Litigation Profile

Court overview. The United States District Court for the District of Delaware sits in Wilmington, Delaware, and is the only federal district for the state — an important detail because Delaware's incorporation law makes it the default venue for disputes involving the many operating companies and NPEs incorporated there. Patent appeals go to the U.S. Court of Appeals for the Federal Circuit, not the Third Circuit. Delaware is perennially one of the busiest patent venues in the country: it received 668 new patent filings in 2022 (17% of the national total, second only to the Western District of Texas), and its judges presided over 1,684 patent cases pending at some point that year (Morris Nichols 2022 D. Del. Patent Litigation Review). Per DLA Piper's 2026 review, Delaware has since rebounded from a post-2022 filing dip and, while not the top venue by raw volume, has been the leading district for patent cases filed by operating companies, with roughly a quarter of Q1 2026 filings (RPX data). It is also the dominant forum for Hatch-Waxman/ANDA pharmaceutical litigation, taking roughly 63% of such cases nationwide in 2022.

Patent docket reputation. Delaware is not a "rocket docket" in the Eastern District of Texas mold. Academic and practitioner analyses describe it as a high-touch, litigation-heavy forum: Delaware cases average roughly twice the docket activity of EDTX cases and are substantially more likely to generate opinions and reach trial (Buffalo Law Review study; the court held 28 trials in 2022 alone). Delaware historically resists § 1404(a) transfer motions, applying the Third Circuit's Jumara framework with strong deference to plaintiff's forum choice. The tracked case Sentient Sensors, LLC v. Cypress Semiconductor Corp. (C.A. No. 19-1868-MN) illustrates the point: Judge Maryellen Noreika denied the defendant's motion to transfer the case to the Northern District of California despite Cypress's principal place of business there, citing the presumption that a plaintiff's choice of forum "should not be lightly disturbed." The court is not characterized in the sourced literature as a plaintiff- or defendant-friendly venue per se; rather, it is known for sophisticated, well-developed patent litigation, heavy briefing practice, and meaningful Markman proceedings, with jury trials common.

Local rules and procedures. The District of Delaware has no formal "Local Patent Rules" comparable to EDTX's; instead, patent case procedure is governed by the court's Default Standard for Discovery, individual judges' standing orders and model/form scheduling orders, and Local Rule 7.1.3's strict briefing structure (tables of contents/authorities, numbered "summary of argument," and statement of facts). Claim construction timing is set through judge-specific scheduling orders rather than uniform rules — the Sentient v. Cypress docket shows the standard sequence of opening/answering/reply/surreply claim-construction briefs followed by a Markman hearing before the district judge. The most distinctive Delaware development is Chief Judge Colm Connolly's April 2022 standing orders requiring enhanced Fed. R. Civ. P. 7.1 disclosure of every owner/member/partner up the ownership chain and disclosure of third-party litigation-funding arrangements — orders that analysts credit with suppressing Delaware NPE filings in 2022–2023 and that generated the Nimitz Technologies v. Bloomberg/CNET enforcement saga, in which the Federal Circuit declined to block the disclosure orders via mandamus. Judge Connolly also uses word-limit briefs and a "ranking" procedure under which lower-ranked summary-judgment motions fall if the top-ranked motion is denied; Judge Williams has adopted similar ranking, and Judge Andrews historically required joint claim charts explaining why each disputed term matters.

Notable cases. The two tracked cases both involve Sentient Sensors LLC: Sentient Sensors, LLC v. Cypress Semiconductor Corp. (C.A. No. 19-1868-MN), which was dismissed with prejudice after settlement but produced a published transfer decision and an O2 Micro-style motion for further claim construction of the term "embedded," and Sentient Sensors, LLC v. Xilinx Inc. (C.A. No. 22-173), filed February 2022 and stayed pending inter partes review (IPR2023-00195). Beyond those, the court's most prominent recent public rulings include Chief Judge Connolly's Nimitz Technologies orders probing undisclosed real parties in interest and litigation funders behind shell-company plaintiffs (with related attorney-disciplinary referrals), and Judge Andrews's decisions in Jackson v. NuVasive (denying a summary-judgment motion for failure to comply with Local Rule 7.1.3's briefing structure) and Acceleration Bay, LLC v. Amazon Web Services, Inc. (a lengthy summary judgment/Daubert opinion). Docket Navigator/RPX data, as summarized by DLA Piper, shows Delaware filings rising again in 2025, particularly among operating companies.

Judges. The active district bench tied to this patent practice is small: Chief Judge Colm F. Connolly, Judge Maryellen Noreika, Judge Gregory B. Williams, and Judge Richard G. Andrews (who took senior status in 2025 and, per the court's 2025 Bench & Bar conference, no longer takes new patent cases). Judge Noreika is the judge in the tracked Sentient v. Cypress case, with Magistrate Judge Christopher J. Burke handling ADR/mediation referral in that matter; Magistrate Judge Burke is widely involved in the court's patent docket through discovery and case-management referrals. The court has also relied heavily on visiting judges to manage its outsized patent caseload, and recent additions of new district judges (including judges Hatcher and Tennyson, referenced in the court's page-limit guidance) reflect ongoing turnover. Sources note the bench is experienced and patent-savvy, but published Lex Machina/Unified Patents analyses characterizing individual judges as plaintiff- or defendant-leaning were not located and are not asserted here.