HTML Media Extensions Working Group - IPR
Specifications published by the Group
The following is the list of specifications produced by the HTML Media Extensions 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 |
|---|---|---|
| HTML5 | disclose | exclude |
| HTML+RDFa 1.1 - Second Edition | disclose | exclude |
| HTML Canvas 2D Context | disclose | exclude |
| HTML 5.1 2nd Edition | disclose | exclude |
| Encrypted Media Extensions | disclose | exclude |
| HTML5 Image Description Extension (longdesc) | disclose | exclude |
| Media Source Extensions™ | disclose | exclude |
| W3C DOM4 | disclose | exclude |
| HTML Accessibility API Mappings 1.0 | disclose | exclude |
| ARIA in HTML | disclose | exclude |
| Document not/no longer under the W3C Patent Policy | Patent Disclosure | Patent Exclusion |
|---|---|---|
| HTML Design Principles | disclose | Exclusion is not possible (document not under PP) |
| HTML 5 Publication Notes | disclose | Exclusion is not possible (document not under PP) |
| Offline Web Applications | disclose | Exclusion is not possible (document not under PP) |
| HTML5 Differences from HTML4 | disclose | Exclusion is not possible (document not under PP) |
| HTML5: Techniques for providing useful text alternatives | disclose | Exclusion is not possible (document not under PP) |
| HTML: The Markup Language (an HTML language reference) | disclose | Exclusion is not possible (document not under PP) |
| Polyglot Markup: A robust profile of the HTML5 vocabulary | disclose | Exclusion is not possible (document not under PP) |
| HTML Microdata | disclose | Exclusion is not possible (document not under PP) |
| HTML to Platform Accessibility APIs Implementation Guide | disclose | Exclusion is not possible (document not under PP) |
| HTML5: Edition for Web Authors | disclose | Exclusion is not possible (document not under PP) |
| HTML Canvas 2D Context, Level 2 | disclose | Exclusion is not possible (document not under PP) |
| main element - an HTML5 extension specification | disclose | Exclusion is not possible (document not under PP) |
| Using ARIA | disclose | Exclusion is not possible (document not under PP) |
| The picture Element | disclose | Exclusion is not possible (document not under PP) |
| The srcset attribute | disclose | Exclusion is not possible (document not under PP) |
| Use Cases and Requirements for Standardizing Responsive Images | disclose | Exclusion is not possible (document not under PP) |
| Public Identifiers for entity resolution in XHTML | disclose | Exclusion is not possible (document not under PP) |
| W3C HTML Ruby Markup Extensions | disclose | Exclusion is not possible (document not under PP) |
| W3C HTML JSON form submission | disclose | Exclusion is not possible (document not under PP) |
| W3C HTML Form HTTP Extensions | disclose | Exclusion is not possible (document not under PP) |
| A transcript extension for HTML | disclose | Exclusion is not possible (document not under PP) |
| Encrypted Media Extensions Initialization Data Format Registry | disclose | Exclusion is not possible (document not under PP) |
| "keyids" Initialization Data Format | disclose | Exclusion is not possible (document not under PP) |
| "webm" Initialization Data Format | disclose | Exclusion is not possible (document not under PP) |
| "cenc" Initialization Data Format | disclose | Exclusion is not possible (document not under PP) |
| Encrypted Media Extensions Stream Format Registry | disclose | Exclusion is not possible (document not under PP) |
| ISO Common Encryption ('cenc') Protection Scheme for ISO Base Media File Format Stream Format | disclose | Exclusion is not possible (document not under PP) |
| WebM Stream Format | disclose | Exclusion is not possible (document not under PP) |
| Media Source Extensions Byte Stream Format Registry | disclose | Exclusion is not possible (document not under PP) |
| MPEG-2 TS Byte Stream Format | disclose | Exclusion is not possible (document not under PP) |
| MPEG Audio Byte Stream Format | disclose | Exclusion is not possible (document not under PP) |
| ISO BMFF Byte Stream Format | disclose | Exclusion is not possible (document not under PP) |
| WebM Byte Stream Format | disclose | Exclusion is not possible (document not under PP) |
Patent Disclosures and Claim Exclusions
This section summarizes patent disclosures by participants in W3C's HTML Media Extensions 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
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 HTML Media Extensions Working Group should use the HTML Media Extensions 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 HTML Media Extensions 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 HTML Media Extensions 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
- Media Source Extensions
- Call for exclusion started on 2016-07-05, opportunity until 2016-09-03
- Encrypted Media Extensions
- Call for exclusion started on 2016-07-05, opportunity until 2016-09-03
- Media Source Extensions
- Call for exclusion started on 2016-05-03, opportunity until 2016-07-02
- ARIA in HTML
- Call for exclusion started on 2015-04-15, opportunity until 2015-09-11
- HTML Accessibility API Mappings 1.0
- Call for exclusion started on 2015-04-09, opportunity until 2015-09-06
- W3C DOM4
- Call for exclusion started on 2015-06-18, opportunity until 2015-08-17
- HTML Canvas 2D Context
- Call for exclusion started on 2015-05-14, opportunity until 2015-07-13
- W3C DOM4
- Call for exclusion started on 2015-04-28, opportunity until 2015-06-27
- Media Source Extensions
- Call for exclusion started on 2015-03-31, opportunity until 2015-05-30
- W3C HTML JSON form submission
- Call for exclusion started on 2014-05-29, opportunity until 2014-10-26
- W3C HTML Form HTTP Extensions
- Call for exclusion started on 2014-05-29, opportunity until 2014-10-26
- W3C DOM4
- Call for exclusion started on 2014-07-10, opportunity until 2014-09-08
- HTML5
- Call for exclusion started on 2014-06-17, opportunity until 2014-08-16
- HTML Canvas 2D Context
- Call for exclusion started on 2014-05-20, opportunity until 2014-07-19
- W3C DOM4
- Call for exclusion started on 2013-11-07, opportunity until 2014-04-06
- Polyglot Markup: A robust profile of the HTML5 vocabulary
- Call for exclusion started on 2014-02-04, opportunity until 2014-04-05
- W3C DOM4
- Call for exclusion started on 2014-02-04, opportunity until 2014-04-05
- W3C HTML Ruby Markup Extensions
- Call for exclusion started on 2013-10-22, opportunity until 2014-03-21
- Media Source Extensions
- Call for exclusion started on 2013-09-05, opportunity until 2013-11-04
- Encrypted Media Extensions
- Call for exclusion started on 2013-05-10, opportunity until 2013-10-07
- HTML5 Image Description Extension (longdesc)
- Call for exclusion started on 2013-07-16, opportunity until 2013-09-14
- The srcset attribute
- Call for exclusion started on 2013-02-28, opportunity until 2013-07-28
- Public Identifiers for entity resolution in XHTML
- Call for exclusion started on 2013-02-28, opportunity until 2013-07-28
- The picture element
- Call for exclusion started on 2013-02-26, opportunity until 2013-07-26
- HTML Canvas 2D Context, Level 2
- Call for exclusion started on 2012-12-20, opportunity until 2013-05-19
- HTML 5.1
- Call for exclusion started on 2012-12-20, opportunity until 2013-05-19
- main element - an HTML5 extension specification
- Call for exclusion started on 2012-12-17, opportunity until 2013-05-16
- HTML5: Edition for Web Authors
- Call for exclusion started on 2011-09-12, opportunity until 2012-02-09
- HTML5
- Call for exclusion started on 2011-05-25, opportunity until 2011-07-24
- HTML+RDFa 1.1
- Call for exclusion started on 2011-05-25, opportunity until 2011-07-24
- HTML Canvas 2D Context
- Call for exclusion started on 2011-05-25, opportunity until 2011-07-24
- HTML Microdata
- Call for exclusion started on 2011-05-25, opportunity until 2011-07-24
- HTML+RDFa
- Call for exclusion started on 2009-10-15, opportunity until 2010-03-14
- HTML 5
- Call for exclusion started on 2008-01-22, opportunity until 2008-06-20
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:
- Provide additional licensing information for documents produced by this Working Group
- Provide the same additional licensing information for all documents with associated licensing obligations produced by this Working Group, or
- 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.