Information

  • The Web Platform Working Group was closed on 14 April 2022.

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.

Document under the W3C Patent Policy 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
Document not/no longer under the W3C Patent Policy 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.

View previous exclusion opportunities

HTML 5.3
Call for exclusion started on 2017-12-14, opportunity until 2018-05-13
Intersection Observer
Call for exclusion started on 2017-09-14, opportunity until 2018-02-11
Indexed Database API 2.0
Call for exclusion started on 2017-08-10, opportunity until 2017-10-09
HTML 5.2
Call for exclusion started on 2017-08-08, opportunity until 2017-10-07
Indexed Database API 2.0
Call for exclusion started on 2017-08-08, opportunity until 2017-10-07
HTML Microdata
Call for exclusion started on 2017-05-05, opportunity until 2017-09-30
HTML 5.1 2nd Edition
Call for exclusion started on 2017-06-20, opportunity until 2017-08-19
W3C DOM 4.1
Call for exclusion started on 2017-03-22, opportunity until 2017-08-18
UI Events KeyboardEvent code Values
Call for exclusion started on 2017-06-01, opportunity until 2017-07-31
UI Events KeyboardEvent key Values
Call for exclusion started on 2017-06-01, opportunity until 2017-07-31
Pointer Lock 2.0
Call for exclusion started on 2016-11-22, opportunity until 2017-04-21
Input Events
Call for exclusion started on 2016-08-30, opportunity until 2017-01-27
HTML 5.2
Call for exclusion started on 2016-08-18, opportunity until 2017-01-15
Indexed Database API 2.0
Call for exclusion started on 2016-08-18, opportunity until 2017-01-15
Pointer Lock
Call for exclusion started on 2016-07-05, opportunity until 2016-09-03
HTML 5.1
Call for exclusion started on 2016-06-21, opportunity until 2016-08-20
FindText API
Call for exclusion started on 2015-10-15, opportunity until 2016-03-13

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.