Web Platform Working Group - IPR

Specifications published by the Group

The following is the list of specifications produced by the Web Platform Working Group that have associated disclosures obligations, and possible licensing obligations under the W3C Patent Policy.

Documents under the W3C Patent Policy

Document	Patent Disclosure	Patent Exclusion
Selection API	disclose	exclude
Web Application Manifest	disclose	exclude
Web Storage (Second Edition)	disclose	exclude
HTML Accessibility API Mappings 1.0	disclose	exclude
ARIA in HTML	disclose	exclude
Clipboard API and events	disclose	exclude
Gamepad	disclose	exclude
Push API	disclose	exclude
Screen Orientation	disclose	exclude
UI Events KeyboardEvent key Values	disclose	exclude
UI Events KeyboardEvent code Values	disclose	exclude
UI Events	disclose	exclude
HTML Imports	disclose	exclude
WebIDL Level 1	disclose	exclude
HTML 5.1 2nd Edition	disclose	exclude
DOM Parsing and Serialization	disclose	exclude
Pointer Lock	disclose	exclude
HTML 5.2	disclose	exclude
Indexed Database API 2.0	disclose	exclude
Input Events Level 1	disclose	exclude
Service Workers	disclose	exclude
Pointer Lock 2.0	disclose	exclude
Input Events Level 2	disclose	exclude
Intersection Observer	disclose	exclude
File API	disclose	exclude

Documents not/no longer under the W3C Patent Policy

Document	Patent Disclosure	Patent Exclusion
FindText API	disclose	Exclusion is not possible (document not under PP)
Input Method Editor API	disclose	Exclusion is not possible (document not under PP)
Quota Management API	disclose	Exclusion is not possible (document not under PP)
Shadow DOM	disclose	Exclusion is not possible (document not under PP)
Custom Elements	disclose	Exclusion is not possible (document not under PP)
XMLHttpRequest Level 1	disclose	Exclusion is not possible (document not under PP)
Streams API	disclose	Exclusion is not possible (document not under PP)
URL	disclose	Exclusion is not possible (document not under PP)
Using ARIA	disclose	Exclusion is not possible (document not under PP)
W3C DOM 4.1	disclose	Exclusion is not possible (document not under PP)
HTML Microdata	disclose	Exclusion is not possible (document not under PP)
HTML 5.3	disclose	Exclusion is not possible (document not under PP)

Patent Disclosures and Claim Exclusions

This section summarizes patent disclosures by participants in W3C's Web Platform Working Group as required by section 6 of the W3C Patent Policy.

W3C takes no position regarding either:

• the validity or scope of any intellectual property right or other rights that might be claimed to pertain to the implementation or use of the technology, or
• the extent to which any license under such rights might or might not be available from those not participating in this group.

Where disclosure is required by a W3C Member, the AC Representative makes the disclosure.

Anyone else may also make a disclosure.

Known Disclosures

Disclosures made of claims believed to be essential for the implementation of Push API

Disclosures for Push API	Licensing	Notes
Issued patent 'US 6188909 ' (US + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'EP 0882375' (Europe + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'EP 1439723' (Europe + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'US 7366529' (US + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'EP 1322072 ' (Europe + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'US 6292668' (US + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'EP 1581016' (Europe + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'JP 3917596' (Japan + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report
Issued patent 'US 7079517' (US + all equivalent foreign counterparts) held by Nokia Corporation disclosed on 2013-02-13	Claims excluded from Royalty-Free commitment: All claims excluded	Push API PAG Report

Disclosures made of claims believed to be essential for the implementation of Shadow DOM

Disclosures for Shadow DOM	Licensing	Notes
Issued patent 'FR2962237' (Institut national de la propriété industrielle) disclosed on 2017-11-01

Disclosures made of claims believed to be essential for the implementation of Custom Elements

Disclosures for Custom Elements	Licensing	Notes
Issued patent 'FR2962237' (Institut national de la propriété industrielle) disclosed on 2017-11-01

Disclosures made of claims believed to be essential for the implementation of HTML Imports

Disclosures for HTML Imports	Licensing	Notes
Issued patent 'FR2962237' (Institut national de la propriété industrielle) disclosed on 2017-11-01	No Patent Policy Obligations	PAG report

How to Make a Patent Disclosure

W3C Members and Invited Experts (including those not participating in this group) wishing to disclose a patent for any specification produced by the Web Platform Working Group should use the Web Platform Working Group patent disclosure form.

Disclosures from the general public should be sent to the W3C Staff.

For specifications developed under the W3C Patent Policy, parties that commit to the W3C Royalty-Free Licensing Terms are not required to disclose patents. Any party (not just the Working Group Participants) may commit to the W3C Royalty-Free Licensing Terms and may do so by following the instructions in the next section.

Claim Exclusions

Only Web Platform Working Group participants may exclude patent claims concerning specifications developed under the W3C Patent Policy, per section 4 of the W3C Patent Policy. To make an exclusion, participants should use the Web Platform Working Group patent claim exclusion form, but only after first disclosing the patent.

Exclusion Opportunities

The Patent Policy FAQ provides detailed information about exclusion opportunities, that is, when a Working Group Participant can exclude a patent claim.

Each exclusion opportunity has a duration. See section 4.1 of the W3C Patent Policy for information on how the exclusion deadline is calculated.

At each exclusion opportunity, Participants may exclude patent claims with respect to a body of text. The Exclusion Draft is the reference body of text for the current exclusion opportunity.

Note: At each new exclusion opportunity (e.g., in the case of a second Candidate Recommendation Snapshot), exclusions are only with respect to differences since the previous reference body of text. These differences may be less than an entire document, and the summary below does not address that granularity. Also, in some edge cases (discussed in the FAQ), Participants, depending on when they joined the Working Group, will have different Exclusion Drafts; the summary below does not reflect this case.

Exclusion Opportunities

No current exclusion opportunities.

Additional Licensing Information

As described in section 5 of the W3C Patent Policy:

All Working Group participants are encouraged to provide a contact from which licensing information can be obtained and other relevant licensing information. Any such information will be made publicly available along with the patent disclosures for the Working Group in question.

Patent holders may:

1. Provide additional licensing information for documents produced by this Working Group
2. Provide the same additional licensing information for all documents with associated licensing obligations produced by this Working Group, or
3. Provide additional licensing information for any W3C document with associated licensing obligations produced by any W3C Working Group under the W3C Patent Policy.

Such licensing information should be sent to the W3C Staff.

Please recall that, per section 5 of the W3C Patent Policy, a W3C Royalty-Free license:

may not impose any further conditions or restrictions on the use of any technology, intellectual property rights, or other restrictions on behavior of the licensee, but may include reasonable, customary terms relating to operation or maintenance of the license relationship such as the following: choice of law and dispute resolution.