Patents

Ericsson v. Lenovo: The Federal Circuit Reopens the Door to Anti-Suit Injunctions in Global FRAND Wars

The Federal Circuit vacated a denial of a foreign anti-suit injunction, tying an SEP holder's right to injunctive relief to its good-faith FRAND-negotiation duty.

March 8, 2026
Cellular tower against a clear sky symbolizing standard-essential 5G patents
Ericsson v. Lenovo reframes when an SEP holder may pursue injunctions worldwide. Shutterstock
Educational content, not legal advice. This article explains general legal concepts. It does not create an attorney–client relationship. For your specific situation, consult a licensed attorney.

In Telefonaktiebolaget LM Ericsson v. Lenovo (United States), Inc., No. 24-1515 (Fed. Cir. Oct. 24, 2024), a panel of Judges Lourie, Prost, and Reyna vacated the U.S. District Court for the Eastern District of North Carolina’s denial of Lenovo’s request for a foreign anti-suit injunction and remanded for the district court to complete the analysis. The decision is one of the most consequential American FRAND rulings in years: it links an SEP holder’s eligibility to seek injunctive relief to whether it has first honored its commitment to negotiate a license in good faith, and it loosens the threshold an implementer must clear to obtain a U.S. order restraining a competitor’s parallel foreign injunctions.

At a glance

  • Case: Telefonaktiebolaget LM Ericsson v. Lenovo (United States), Inc., No. 24-1515 (Fed. Cir. Oct. 24, 2024); on appeal from the Eastern District of North Carolina.
  • Panel: Lourie, Prost, and Reyna, JJ.
  • Posture: Interlocutory appeal from denial of a foreign anti-suit injunction. The Federal Circuit vacated and remanded.
  • Holding 1: Under the Microsoft v. Motorola three-part framework, a U.S. action can be “dispositive” of a foreign proceeding without resolving the entire foreign case — it is enough that the U.S. action would resolve whether the SEP holder may pursue the foreign injunction at all.
  • Holding 2: A party that has given an ETSI FRAND commitment must comply with its good-faith-negotiation obligation before pursuing injunctive relief on those SEPs; otherwise it “has no right to seek injunctions” while the dispute is pending.
  • Why it matters: The ruling positions U.S. courts to police foreign SEP injunctions and re-engages American courts in the global contest over who sets FRAND terms.

The standard-essential patent backdrop

Standard-essential patents are patents that a participant in a standard-setting organization — here, the European Telecommunications Standards Institute (ETSI), which administers the cellular standards — declares essential to practicing an industry standard such as 4G or 5G. Because a product cannot comply with the standard without practicing the patent, SEPs confer outsized leverage: an implementer that wants to build a standard-compliant handset has no design-around. To temper that leverage, standard-setting bodies extract a commitment from declarants to license their SEPs on fair, reasonable, and non-discriminatory (FRAND) terms.

The Ericsson-Lenovo dispute centers on Ericsson’s portfolio of declared 5G SEPs. On October 11, 2023, Ericsson sued Lenovo in the Eastern District of North Carolina, alleging that Lenovo infringed its U.S. 5G SEPs and breached its own FRAND obligations by refusing to negotiate in good faith. Two days later, Lenovo countered by filing in the United Kingdom, asking the English court to set FRAND terms for a worldwide cross-license — a familiar implementer move given the UK courts’ post-Unwired Planet willingness to determine global rates. Ericsson then escalated, securing preliminary injunctions against Lenovo in Colombia and Brazil based on alleged SEP infringement. Lenovo asked the North Carolina court to enjoin Ericsson from enforcing those Latin American injunctions. The district court refused, and the appeal followed.

FRAND commitments and the duty to negotiate in good faith

The most far-reaching part of the opinion concerns the substance of the FRAND commitment. The Federal Circuit held that “a party that has made an ETSI FRAND commitment must have complied with the commitment’s obligation to negotiate in good faith over a license to its SEPs before it pursues injunctive relief based on those SEPs.” That is a meaningful tightening of the prerequisites for injunctive relief in the SEP context, and it is grounded in contract: the ETSI undertaking is a promise, and a promisor who has not performed cannot use the patent’s exclusionary power as a cudgel.

Crucially, the court identified a concrete way for an SEP holder to satisfy the duty — “making an offer at a rate that is actually FRAND.” If Ericsson breached its good-faith-negotiation obligation, the panel reasoned, then it would “have no right to seek injunctions against Lenovo on SEPs while the case is pending.” That framing converts the abstract FRAND promise into an operative gatekeeper: the question of whether the U.S. court can stop the foreign injunctions collapses into whether Ericsson honored its negotiating duty. The holding does not decide that Ericsson breached — it leaves the merits for remand — but it makes the breach inquiry the fulcrum of the entire dispute.

Anti-suit injunctions and global rate-setting

Procedurally, the case turns on the three-part test the Ninth Circuit articulated in Microsoft Corp. v. Motorola, Inc. for foreign anti-suit injunctions: (1) whether the parties and issues are the same and the domestic action is dispositive of the foreign action to be enjoined; (2) whether the foreign litigation frustrates a domestic policy, is vexatious, or threatens the court’s in rem or quasi-in rem jurisdiction, or otherwise raises equitable concerns; and (3) whether the impact on international comity is tolerable.

The district court foundered on the first, “threshold” element. It read “dispositive” to require that the U.S. action would resolve the parties’ entire dispute — effectively, that the North Carolina court would have to produce a global cross-license before it could enjoin the foreign injunctions. The Federal Circuit rejected that demanding construction. Dispositive, the panel explained, asks whether the domestic suit would resolve the foreign action to be enjoined — here, the Colombian and Brazilian injunctions — not the entire foreign litigation. Because adjudicating Ericsson’s good-faith-negotiation compliance would determine whether Ericsson was even entitled to seek the foreign injunctions, the U.S. case is dispositive of those injunctions. The panel signaled that the remaining factors likely favored Lenovo, given the narrow scope of the relief sought and the private, contractual nature of the FRAND dispute, but it remanded for the district court to complete the analysis in the first instance.

The decision carries strategic weight in the global forum-shopping contest. UK and Chinese courts had largely cornered the market on setting worldwide FRAND rates. By reaffirming that U.S. courts can both adjudicate FRAND compliance and shield implementers from foreign coercion, Ericsson v. Lenovo re-arms American courts in that competition. The opinion also notes a tension worth watching: Ericsson here asks the Eastern District of North Carolina to set global FRAND rates, a position difficult to square with Ericsson’s earlier opposition, in its Samsung litigation, to a Chinese court setting global rates — a reminder that parties’ comity arguments tend to track their litigation interests.

Open questions

  • What proof shows good-faith negotiation? The court offered “an offer at a rate that is actually FRAND” as one sufficient method, but did not define the universe of conduct that satisfies — or breaches — the duty, leaving district courts to develop the standard.
  • How will the remand resolve comity? The panel predicted the second and third factors favor an injunction but did not decide them; the district court’s treatment of comity toward Colombia and Brazil will be closely read.
  • Does the holding reach non-ETSI commitments? The opinion is framed around the ETSI undertaking. Whether the same gatekeeping logic applies to FRAND promises made to other standard bodies remains untested.
  • Will U.S. courts now set global rates? Ericsson’s request that North Carolina set worldwide terms tees up whether American courts will follow the UK into global rate adjudication.

Implications

  • SEP holders lose a pressure tactic. Pursuing foreign injunctions before demonstrating good-faith FRAND negotiation now risks a U.S. anti-suit injunction shutting those efforts down.
  • Implementers gain a defensive tool. A narrowly scoped anti-suit injunction is easier to obtain once “dispositive” is read to reach only the foreign injunction, not the entire foreign case.
  • Forum selection grows more contested. Expect more races to the courthouse, with implementers seeking U.S. or UK rate-setting and SEP holders seeking leverage abroad.
  • Good-faith conduct becomes evidence. Offers, counteroffers, and the reasonableness of proposed rates take on heightened significance as the trigger for — or bar to — injunctive relief.
  • Watch the remand and any en banc or certiorari activity before treating the framework as settled.

Frequently asked questions

Did the Federal Circuit decide that Ericsson breached its FRAND commitment? No. The court held that whether Ericsson complied with its good-faith-negotiation duty is the dispositive question and remanded for the district court to decide it. The panel made the breach inquiry central without resolving it.

What is a foreign anti-suit injunction? It is an order from a domestic court directing a party not to prosecute or enforce a parallel proceeding in a foreign court. It operates on the party, not the foreign court, and U.S. courts grant it sparingly under the Microsoft v. Motorola framework out of respect for international comity.

Why does the ETSI FRAND commitment matter so much here? Because it is a contractual promise to license on fair terms, the court treated good-faith negotiation as a precondition to wielding the patents’ exclusionary power. An SEP holder that has not honored that promise cannot, the panel said, seek injunctions while the dispute is pending.

Authorities and sources