Applying New Halo Standard, the Federal Circuit Reverses Course and Affirms Finding of Willful Infringement

Sep 14, 2016

Reading Time : 1 min

The parties involved in this appeal represent the two main competitors in the orthopedic pulsed lavage device market. In 2010, Stryker sued Zimmer for infringement of three patents. On summary judgment, the district court found that Zimmer infringed two of the three asserted patents. The parties then proceeded to trial on the issue of infringement of the third patent, willfulness of all three patents and Zimmer’s invalidity defenses. Following a jury verdict in which Zimmer was found to willfully infringe all three asserted patents and the patents were found to be not invalid, the district court awarded treble damages to Stryker. The district court also found the case exceptional, awarded fees to Stryker and entered a permanent injunction against Zimmer.

In its initial review, the Federal Circuit reversed the jury’s finding of willfulness. However, the Supreme Court granted certiorari to consider whether the test for willfulness articulated in Seagate was consistent with the Patent Act. In its Halo decision, the Supreme Court described the Seagate test as too restrictive for district courts to exercise their discretion and held that willfulness should be evaluated under a preponderance of the evidence standard. In view of this decision, the Supreme Court vacated the Federal Circuit’s earlier decision in this case. On remand, the Federal Circuit affirmed the jury’s finding that Zimmer willfully infringed Stryker’s patents because the jury made its finding under the clear and convincing evidentiary standard, which exceeds the preponderance of the evidence standard articulated by the Supreme Court in Halo. However, the Federal Circuit vacated the award of enhanced damages and remanded the case to allow the district court the opportunity to “exercise its discretion” and determine whether enhancement is appropriate in view of the circumstances of the case.

Stryker Corporation v. Zimmer, Inc., No. 2013-1668 (Fed. Cir. September 12, 2016).

 

Share This Insight

Previous Entries

IP Newsflash

February 20, 2026

The Federal Circuit recently addressed whether the PTO must conduct notice‑and‑comment rulemaking before issuing instructions that guide how the Board should exercise discretion at the institution stage of IPRs. The court held that no such rulemaking is required. Instructions to the Board regarding its use of the Director’s delegated discretionary authority not to institute review are merely general statements of policy exempt from notice-and-comment rulemaking.  

...

Read More

IP Newsflash

February 18, 2026

The District Court for the District of Delaware recently invalidated claims directed to a panoramic objective lens for lack of enablement, holding the claims impermissibly recited a single element in means‑plus‑function form. Under § 112, ¶ 6, “[a]n element in a claim for a combination may be expressed as a means or step for performing a specified function….” By its plain terms, the statute permits means‑plus‑function claiming only in the context of a “combination.” In other words, a claim may not consist solely of a single means‑plus‑function element. Claims drafted as a single means are invalid for lack of enablement as a matter of law.

...

Read More

IP Newsflash

February 13, 2026

In an ANDA litigation, the District of Delaware recently denied the defendants’ motion to compel the production of correspondence between the plaintiffs’ testifying expert and a third-party analyst who had performed experiments and provided data used by the testifying expert. The court found that the scope of material sought by the motion was overbroad and disproportionate to the needs of the case.

...

Read More

IP Newsflash

February 12, 2026

In an ANDA litigation, the District of Delaware recently denied the plaintiffs’ motion to strike portions of the defendants’ expert reports and related deposition testimony. Although the defendants’ invalidity contentions did not state the specific theories of invalidity upon which the expert opined, the court found that none of the Pennypack factors supported excluding that expert testimony.

...

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.