District Court Denies Plaintiff’s Summary Judgment Motion on Improper Inventorship Defense, But Grants Plaintiff’s Motion on Derivation Defense

Jul 10, 2018

Reading Time : 2 min

Cellular Communications Equipment LLC v. HTC Corp., involves several patents, one of which names a single inventor, Mr. Benoist Sebire.  Before the November 2007 filing date, Mr. Sebire, along with other members of a working group, participated in conference relating to 3G technology.  At the conference, materials were distributed to attendees, including a proposal by Ericsson.  After the conference, but still before the filing date, an attendee circulated a summary of the working group’s discussions to Mr. Sebire and other attendees.  The meeting and materials became the bases for HTC’s defenses of improper inventorship and derivation with regard to the Sebire patent.   HTC did not, however, identify the alleged correct inventor(s).  Plaintiff moved for summary judgment on both the improper inventorship defense as well as the derivation defense.    

The court first addressed the improper inventorship defense.  Pre-AIA 35 U.S.C. § 102(f) provides that “[a] person shall be entitled to a patent unless . . . he did not himself invent the subject matter sought to be patented.”  To prove invalidity for improper inventorship, one must show clear and convincing proof that the patent names “more or fewer than the true inventors.”  Gemstar-TV Guide Int’l, Inc. v. Int’l Trade Comm’n, 383 F.3d 1352, 1381-82 (Fed. Cir. 2004).  Cellular Communications urged that the law required the defendant to identify the purportedly true inventor(s) to support its defense.  The court, however, rejected this argument, noting that Cellular Communications “failed to cite case law that explicitly requires the identification of a putative inventor to establish a genuine issue of material fact with respect to improper inventorship.”  After resolving this legal issue, the court considered the evidence.  According to the court, two pieces of evidence–the email summary, and expert testimony regarding the summary’s contents–established an issue of fact with regard to inventorship.  As a result, summary judgment was denied on this issue.

With respect to derivation, however, the court granted the plaintiff’s motion for summary judgment.  Like improper inventorship, a derivation defense is rooted in pre-AIA 35 U.S.C. § 102(f).  Cumberland Pharm. v. Mylan Inst., 846 F. 3d 1213, 1217-18 (Fed. Cir. 2014).  To establish this defense, one must demonstrate “both prior conception of the invention by another and communication of that conception to the patentee” by clear and convincing evidence.  Eaton Corp. v. Rockwell Int’l Corp., 323 F.3d 1332, 1334 (Fed. Cir. 2003).  In turn, to show conception, one must show “formation in the mind of the inventor of a definite and permanent idea of the complete and operative invention.”  Singh v. Brake, 317 F.2d 1334, 1340 (Fed. Cir. 2003) (emphasis added).  To support its derivation defense, HTC pointed to a slide deck and the Ericsson proposals coupled with the working group’s discussions.  With respect to the slide deck, the court agreed with Cellular Communications that the deck merely disclosed “one step out of many that [were] claimed” in the Sebire patent.  Accordingly, this was insufficient to establish conception.  With respect to the Ericsson proposals and the group’s discussions, the court concluded that this evidence failed to show that “another inventor conceived a definite and permanent idea of the . . . invention.”  Accordingly, the court granted summary judgment in favor of Cellular Communications on the issue of derivation. 

Cellular Communications Equipment LLC v. HTC Corp., Civil No. 6-16-cv-475-KNM (E.D. Tex. July 5, 2018) (Mitchell, MJ)

Share This Insight

Previous Entries

IP Newsflash

December 18, 2025

The Federal Circuit recently vacated a $20 million jury verdict in favor of a patentee and remanded with instructions to dismiss the case for lack of subject matter jurisdiction, finding that the patentee did not own the asserted patents at the time it filed suit and therefore lacked standing.

...

Read More

IP Newsflash

December 17, 2025

The Federal Circuit recently affirmed a Patent Trial and Appeal Board decision finding claims that had been subject to an ex parte reexamination unpatentable. As a threshold issue, the court held that IPR estoppel under 35 USC § 315(e)(1) does not apply to ongoing ex parte reexaminations. Accordingly, the Patent Office did not err in continuing the reexamination after issuing final written decisions in co-pending IPRs.

...

Read More

IP Newsflash

December 15, 2025

The District of Delaware recently denied a defendant’s motion to dismiss plaintiff’s demand for enhanced damages based on willful infringement pursuant to 35 U.S.C. § 284, explaining that neither a demand for damages under § 284 nor an accusation of willful infringement amount to a claim for relief that can be subject to dismissal under Rule 12(b)(6).

...

Read More

IP Newsflash

December 9, 2025

The Federal Circuit recently denied a petition for a writ of mandamus that challenged the PTO Director’s reliance on “settled expectations” to discretionarily deny two inter partes review (IPR) petitions. In so doing, the court explained that, while it was not deciding whether the Director’s use of “settled expectations” was correct, the petitioner’s arguments about what factors the Director may consider when deciding whether to institute an IPR or post-grant review (PGR) are not generally reviewable and did not provide sufficient basis for mandamus review here.

...

Read More

© 2025 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.