Intellectual Property Policies in Modern JPEG Formats

This article provides an overview of the intellectual property (IP) policies that govern newly developed extensions within the JPEG family of standards. It explores how the Joint Photographic Experts Group—operating under ISO, IEC, and ITU-T—manages standard-essential patents, enforces licensing commitments, and balances the drive for royalty-free baseline implementations against proprietary contributions in emerging formats like JPEG XL, JPEG XS, and JPEG AI.

The Joint ISO/IEC and ITU-T Patent Policy

The JPEG committee (formally ISO/IEC JTC 1/SC 29/WG 1) does not maintain an independent patent system. Instead, all new extensions, coding tools, and profiles fall strictly under the Common Patent Policy for ITU-T/ITU-R/ISO/IEC.

This policy establishes the legal ground rules for standard-essential patents (SEPs)—patents containing claims that are technically impossible to avoid when implementing a normative part of a JPEG standard.

Licensing Declaration Options

When participating organizations or external parties submit technologies for inclusion in a new JPEG standard, they are required to submit formal Patent Statement and Licensing Declarations. Contributors must choose one of three standard legal pathways:

1. Option 1 (Royalty-Free): The patent holder agrees to grant a worldwide, non-exclusive license on a royalty-free basis to an unrestricted number of applicants, under fair and reasonable terms.
2. Option 2 (FRAND / RAND): The patent holder agrees to grant licenses on a Fair, Reasonable, and Non-Discriminatory basis, potentially subject to monetary compensation (royalties).
3. Option 3 (Refusal): The patent holder is unwilling to license the patent under Option 1 or Option 2 terms.

If an essential patent falls under Option 3, the JPEG committee is required by standard ISO/IEC rules to redesign the specification, develop workarounds, or halt publication until the encumbered technology is completely removed from the normative text.

The Royalty-Free Baseline Preference

Historically, modern image adoption hinges on zero-licensing barriers on the web. Consequently, for general-purpose formats such as JPEG XL (ISO/IEC 18181), the JPEG committee actively targets Option 1 (Royalty-Free) declarations for baseline specifications.

To maintain this:

• Call for Proposals (CfP): When initiating a new project, WG 1 typically includes language emphasizing the intent to produce a standard that can be implemented on a royalty-free basis.
• IP Reviews during Standardization: If a contributor submits a tool requiring commercial licensing (Option 2) for a format intended for universal distribution, the working group often evaluates whether an alternative, unencumbered technical solution can be utilized instead.

Mandatory Disclosure Obligations

Transparency is required throughout the standards-setting lifecycle:

• Duty to Disclose: Any participant contributing to or attending JPEG standard development meetings is obligated to disclose any known patents or published patent applications owned by them or their employers that might be infringed by the draft standard.
• "Patent Calls": At the beginning of standardization meetings, formal calls for patents are made to ensure no undisclosed claims surface after an extension reaches the Final Draft International Standard (FDIS) phase.
• Third-Party Claims: If non-participating third parties surface patent claims against a newly issued standard, the management bodies (ISO and ITU-T) formally reach out to request a declaration under Option 1 or Option 2.

Handling Advanced and Specialized Profiles

For highly specialized extensions targeting niche industrial domains—such as JPEG XS (low-latency transmission for broadcast and professional video) or JPEG Pleno (light field and holographic data)—the committee permits Option 2 (FRAND) licensing. In these sectors, commercial patent pools often form outside of ISO to administer licensing programs, while the core JPEG IP framework strictly maintains that all implementations must remain accessible under non-discriminatory terms.