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Patent Infringement Discovery Evidence

Jones Day

Orders to Preserve Evidence (“Saisies”) at the Unified Patent Court: Two-Year Roundup and Early Insights

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Evidence is a key battleground in virtually all patent litigation cases. As a Court designed to combine the best and most efficient features of the main EU national patent litigation systems, the Unified Patent Court (“UPC”)...more

A&O Shearman

Poster Presentation Tied To Business Objectives Serves As Evidence Of Infringement Of Patented Methods

A&O Shearman on

On February 12, 2025, the United States District Court for the District of Delaware denied defendant Parse Biosciences’s (“Parse”) motions for summary judgment that: (i) Parse had never actually conducted any direct or...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Year in Review – Caveat Experimenter: Using Experimental Data in PTAB Proceedings Comes With Risks

Parties involved in Patent Trial and Appeal Board (PTAB) proceedings sometimes contemplate submitting experimental data to support their positions. Although such data can be useful, there also are risks. Several recent cases...more

Jones Day

Speculative IPR Discovery Request Not in the Interest of Justice

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“Because Congress intended inter partes reviews to serve as a faster and more cost-effective alternative to litigating validity in district courts, discovery in inter partes reviews is limited.” See Garmin Int’l, Inc. v....more

Knobbe Martens

New Trial Granted Because “Nearly All” of the Defendant’s Noninfringement Evidence Was Untimely

Knobbe Martens on

The district court erred by admitting untimely expert testimony on noninfringement and by refusing to grant a new trial after the jury found noninfringement. Trudell Medical International (“Trudell”) sued D R Burton...more

McDermott Will & Emery

Judicial Bias and Erroneous Admission of Expert Testimony Prompt Case Reassignment

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit reversed a district court’s decision to admit expert testimony and remanded the case to a different judge, noting that “from the moment this case fell in his lap, the trial...more

Akin Gump Strauss Hauer & Feld LLP

District Court: Knowledge of Infringement Cannot be Inferred From Non-Production of Opinion of Counsel Letter

The District of Delaware recently rejected a patentee’s argument that non-production of an opinion letter from counsel, combined with knowledge of the patent, warranted a finding that defendant induced infringement. ...more

Patterson Belknap Webb & Tyler LLP

There’s an Exception to Every Rule: Judge Schofield Finds a Comparison of the Plaintiff’s Patented System and the Accused System...

In a recently published opinion, Judge Lorna G. Schofield (S.D.N.Y.) found that it was appropriate to compare the accused system to a plaintiff’s commercial system embodying the asserted patent claims, rather than the patent...more

Akin Gump Strauss Hauer & Feld LLP

PTAB Denies Motion to Compel Discovery of Evidence from Parallel ITC Investigation Due to Lack of Inconsistency

The PTAB denied a petitioner’s motion to compel routine discovery that sought information from a parallel ITC investigation for alleged inconsistent positions taken by patent owner in the IPR. The board found that patent...more

Wolf, Greenfield & Sacks, P.C.

Sued: What In-house Counsel Without Litigation Experience Need to Know - Preparing Your Inside Team

3: Preparing Your Inside Team - Preservation, Privilege, Potential Pitfalls -This is the third in a series of articles that explores considerations and suggested actions for in-house counsel who are inexperienced in patent...more

Association of Certified E-Discovery...

How Delaying Third Party Discovery Can End Up Costing You Dearly

[Editor’s Note: This article has been republished with permission. It was originally published January 18, 2024 on the eDiscovery Assistant Blog] In Episode 129 of Case of the Week, Kelly Twigger of eDiscovery Assistant...more

Haug Partners LLP

Foresight in Patent Litigation: How Adherence to Local Rules Can Make or Break a Case

Haug Partners LLP on

On September 7, 2022, the Court of Appeals for the Federal Circuit issued a precedential opinion in Arendi S.A.R.L v. LG Electronics, Inc., offering an important reminder to patent litigators of the necessity of following the...more

Jones Day

Discovery Request Seeking Deposition Preparation Materials Denied

Jones Day on

The Patent Trial and Appeal Board (“PTAB”) recently denied a Motion for Additional Discovery because the movant could not prove beyond mere speculation that the requested documents would be useful to show witness scripting....more

Knobbe Martens

Non-Expert Testimony on Obviousness Is Inadmissible

Knobbe Martens on

HVLPO2, LLC v. OXYGEN FROG, LLC - Before Newman, Moore, and Chen. Appeal from the United States District Court for the Northern District of Florida. Summary: It is an abuse of discretion to permit a witness to testify...more

Jones Day

ITC Permits Addition of Invalidity Defense Previously Raised By Terminated Respondent

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Administrative Law Judge (“ALJ”) McNamara’s recent order suggests that respondents may be permitted to add defenses if another respondent makes the complainant aware of the defense during discovery. See In the Matter of...more

Jones Day

Additional Discovery: Must Be More Than Mere Possibility

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The PTAB recently denied a motion for additional discovery that sought the production of documents argued to be relevant to inventorship. In Watson Laboratories, Inc. v. United Therapeutics, Corp., Case IPR2017-01621 and...more

Jones Day

Cover All Your Bases in ITC Discovery

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Certain Access Control Systems and Components Thereof, Inv. No. 337-TA-1016 (May 31, 2017), is a good lesson in covering all your bases. Relying on a non-infringement decision by ALJ Pender, respondents assumed that they did...more

Proskauer - New England IP Blog

Beware the Quagmire of Personal Jurisdiction

A plaintiff in the District of New Hampshire recently found itself stuck in an unenviable and inescapable jurisdictional hole. Plaintiff Presby Patent Trust sued Infiltrator Systems, a Connecticut-based manufacturer and...more

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