How EU Antitrust Probes Impact AV1 Licensing Terms

This article examines how the European Commission’s antitrust scrutiny into the Alliance for Open Media (AOMedia) shaped the licensing environment for the AV1 video codec. It outlines the core regulatory concerns regarding mandatory royalty-free licensing, details the outcome of the European Union's preliminary investigation, and explains how this regulatory pressure influences current and future multimedia codec adoption across the tech industry.

The Focus of the EU Antitrust Investigation

In 2022, the European Commission initiated a preliminary antitrust investigation into AOMedia, the consortium behind the AV1 codec whose members include Google, Amazon, Apple, Meta, and Microsoft. Regulators were concerned that AOMedia’s licensing terms—specifically the requirement that licensees provide royalty-free licenses to their own patents essential to AV1—might violate EU competition rules. The Commission sought to determine whether these mandatory cross-licensing clauses and defensive termination provisions imposed anticompetitive restrictions that foreclosed rival video formats or penalized companies holding competing intellectual property.

Preserving the Royalty-Free Model

The primary concern among developers was that European regulators might force AOMedia to alter its foundational licensing framework. Traditional video codecs, such as HEVC (H.265), operate under complex, paid licensing pools. AV1 was designed as an open, royalty-free alternative to avoid unpredictable royalty fees.

If antitrust authorities had deemed the defensive termination clause illegal, AOMedia's ability to protect AV1 users from patent lawsuits would have been compromised. The clause allows AOMedia to revoke an entity’s royalty-free license if that entity initiates patent infringement litigation against AV1. This legal mechanism acts as a collective shield, ensuring that no member or adopter can exploit the standard commercially while simultaneously suing other implementers.

The Case Closure and Its Implications

In May 2023, the European Commission formally closed its preliminary antitrust investigation into AOMedia after finding insufficient evidence of anticompetitive market effects. The closure provided crucial legal certainty for market participants:

• Affirmation of Open Standards: The decision demonstrated that standard-setting organizations can use royalty-free policies with defensive provisions without inherently breaching EU antitrust laws, provided they do not artificially exclude market competition.
• No Mandatory License Changes: AOMedia was not forced to amend its patent licensing terms, leaving the original AOMedia Patent License 1.0 intact for both hardware and software implementations.
• Adoption Certainty: Major streaming platforms, browser developers, and hardware manufacturers were able to continue integrating AV1 decoding and encoding support without immediate risk of regulatory-driven licensing changes.

Ongoing Tensions with Third-Party Patent Pools

While the EU cleared AOMedia’s regulatory hurdles, the investigation brought sustained scrutiny from third-party patent licensing administrators, such as Sisvel. Non-AOMedia members claiming to hold patents essential to AV1 continue to operate outside the royalty-free agreement.

The European antitrust inquiries highlighted that while AOMedia cannot be mandated to switch to a paid model, neither can it prevent external patent owners from asserting valid patents in European courts. Consequently, the licensing reality of AV1 in Europe remains a balance between a validated, royalty-free consortium license and the ongoing legal risks presented by external patent pool aggregators.