Expert Witness’ Flawed Infringement Opinion Supports an Award of Attorneys’ Fees

Jul 23, 2015

Reading Time : 1 min

Under 35 U.S.C. § 285, a court may award reasonable attorneys’ fees “in exceptional cases.” An “exceptional” case is one that stands out from others with respect to the substantive strength of a party’s litigating position or the unreasonable manner in which the case was litigated. In determining whether a case is “exceptional,” courts may consider frivolousness, motivation, and objective unreasonableness in analyzing the factual or legal components, and the need in particular circumstances to advance considerations of compensation and deterrence. 

The court agreed that plaintiffs’ failure to correct inventorship was objectively unreasonable. The court reasoned that it was obvious that an unnamed inventor should have been a named inventor because plaintiffs “clearly suspected Chung was an inventor.” In 2007, plaintiffs obtained a transfer of his rights, title and interest in the patent and in 2011 the unnamed inventor testified regarding his significant contribution to the invention. Further, a consultant hired by plaintiffs in 2007, who corroborated Chung’s contribution, was aware of Chung. The court also found that plaintiffs’ reliance on their expert’s infringement report was objectively unreasonable because the entire report was not based on any reliable methodology. The infringement analysis, both literal and under the doctrine of equivalents, was conclusory, and without analysis of how each claim element read on or was met by the accused rides. The court further commented that even if the court assumes the documents and deposition referenced by the report contain the necessary analysis, “it is not the court’s role (nor the opposition’s responsibility) to comb through these documents, extrapolate the necessary information, analyze it, and hobble together an expert opinion based on assumptions of what the expert felt was significant.” The court concluded that the report so lacked any reliable methodology under the Daubert analysis and Federal Rule of Evidence 702, that it should have been apparent to plaintiffs.

Magnetar Technologies Corp v. Six Flags Theme Park Inc., 1­07­cv­00127 (D. Del. July 21, 2015, Order) (Thynge, M.J.).

Share This Insight

Previous Entries

IP Newsflash

May 07, 2026

The Northern District of Illinois granted a summary judgment motion of no invalidity based on indefiniteness because the qualitative terms like “sufficiently slow” and “desired period of time” were definite when viewed in light of the surrounding claim language and specification.

...

Read More

IP Newsflash

April 9, 2026

In the April 1, 2026 edition of the Official Gazette, the U.S. Patent and Trademark Office announced a new procedural framework that permits patent owners to submit a limited, early response to a request for ex parte reexamination.

...

Read More

IP Newsflash

March 12, 2026

The Northern District of Illinois recently dismissed a complaint without prejudice for failing to plausibly allege patent infringement. The court found that the allegations of direct infringement were insufficiently pled where the images of the accused product included in the complaint did not appear to show a particular necessary element of the claims.

...

Read More

IP Newsflash

March 12, 2026

The District of New Jersey recently denied the litigants’ request for a briefing schedule to resolve a dispute about a proposed discovery confidentiality order, and also denied extending the deadlines for the defendants’ invalidity and non-infringement contentions. At issue was the scope of the FDA and patent prosecution bars in the confidentiality order.

...

Read More

© 2026 Akin Gump Strauss Hauer & Feld LLP. All rights reserved. Attorney advertising. This document is distributed for informational use only; it does not constitute legal advice and should not be used as such. Prior results do not guarantee a similar outcome. Akin is the practicing name of Akin Gump LLP, a New York limited liability partnership authorized and regulated by the Solicitors Regulation Authority under number 267321. A list of the partners is available for inspection at Eighth Floor, Ten Bishops Square, London E1 6EG. For more information about Akin Gump LLP, Akin Gump Strauss Hauer & Feld LLP and other associated entities under which the Akin Gump network operates worldwide, please see our Legal Notices page.