W3C Group Participation Home

Cascading Style Sheets (CSS) Working Group Patent Policy Status

Participation

W3C Member Organizations
  • ACCESS CO., LTD. (1 representative)
  • Adobe Systems Inc. (6 representatives)
  • Antenna House, Inc. (4 representatives)
  • Apple, Inc. (8 representatives)
  • Beyond Perspective Solutions ltd (2 representatives)
  • Bloomberg (3 representatives)
  • Cox Communications, Inc. (no representative)
  • Disruptive Innovations (1 representative)
  • Electronics and Telecommunications Research Institute (ETRI) (1 representative)
  • Google, Inc. (8 representatives)
  • Hachette Livre (1 representative)
  • Hewlett Packard Company (2 representatives)
  • HTML5 Converged Technology Forum (1 representative)
  • IBM Corporation (1 representative)
  • Intel Corporation (1 representative)
  • Interactive Advertising Bureau - IAB (1 representative)
  • jQuery Foundation (2 representatives)
  • LG Electronics (2 representatives)
  • Microsoft Corp. (9 representatives)
  • Mozilla Foundation (7 representatives)
  • NIC.br - Brazilian Network Information Center (3 representatives)
  • Nippon Telegraph & Telephone Corp. (NTT) (1 representative)
  • Opera Software (4 representatives)
  • Rakuten,Inc. (3 representatives)
  • Samsung Electronics Co., Ltd. (6 representatives)
  • Sikos Web Consulting (1 representative)
  • Skynav, Inc. (1 representative)
  • Tencent (1 representative)
  • The Paciello Group, LLC (no representative)
  • Vivliostyle Inc. (3 representatives)
Invited Experts
  • Elika Etemad
  • Dael Jackson
  • Brad Kemper
  • Jirka Kosek
  • Anton Prowse
  • Florian Rivoal
  • Lea Verou
Team members
  • Bert Bos
  • Richard Ishida
  • Philippe Le Hégaret
  • Chris Lilley
  • Liam Quin

See also the list of individuals participating in this group.

Join or leave this group (see general instructions for joining this group). Advisory Committee Representatives of participating Members may also nominate or change representatives in the group.

The Call for Participation for this group was announced on 1 July 2014; see the Patent Policy FAQ for information about continued participation before re-joining the group.

Note: Please see additional disclosure and/or licensing information associated with this group (e.g., information about a PAG, or disclosures that pre-date the W3C Patent Policy).

Licensing Commitments

Participants in this group have made certain licensing commitments by joining the group. See the details about licensing commitments from current and past Participants and other parties.

W3C Members not participating in this group who wish to make the same licensing commitments for specifications developed by this group may do so through a form for licensing commitments from non-participating Members.

Other parties who wish to make the licensing commitments for this group should consult the instructions for non-Members to make licensing commitments for this group.

Specifications for this group

The following is the list of specifications produced by the Cascading Style Sheets (CSS) Working Group that have associated disclosures obligations, and possibly licensing obligations under the W3C Patent Policy.

Drafts
Specification Policy Disclose Exclude Add licensing information Disclosure & exclusion
CSS Multi-column Layout Module W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Paged Media Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
Selectors Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Text Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Backgrounds and Borders Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS basic box model W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Cascading and Inheritance Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Fonts Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Ruby Layout Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Values and Units Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS3 module: Border W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS3 module: line W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Lists and Counters Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Basic User Interface Module Level 3 (CSS3 UI) W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS3 Generated and Replaced Content Module W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Speech Module W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Syntax Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
SVG's XML Binding Language (sXBL)
Jointly developed with 		W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Template Layout Module W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Generated Content for Paged Media Module W3C Disclose Exclude until 14 June 2015 Add licensing information N/A
CSSOM View Module W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS 2D Transforms W3C Disclose No open exclusion opportunity Add licensing information 1 patents have been disclosed
CSS 3D Transforms Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information 1 patents have been disclosed
CSS Animations W3C Disclose No open exclusion opportunity Add licensing information 1 patents have been disclosed
CSS Flexible Box Layout Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Image Values and Replaced Content Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Transitions W3C Disclose No open exclusion opportunity Add licensing information 1 patents have been disclosed
Cascading Style Sheets (CSS) Snapshot 2010 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Writing Modes Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Device Adaptation W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Conditional Rules Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Exclusions Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Grid Layout Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Regions Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Object Model (CSSOM) W3C Disclose No open exclusion opportunity Add licensing information N/A
Selectors Level 4 W3C Disclose No open exclusion opportunity Add licensing information N/A
Compositing and Blending Level 1
Jointly developed with SVG Working Group.		 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Counter Styles Level 3 W3C Disclose Exclude until 04 April 2015 Add licensing information N/A
CSS Masking Module Level 1
Jointly developed with SVG Working Group.		 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Text Decoration Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Custom Properties for Cascading Variables Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Box Alignment Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Fragmentation Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Positioned Layout Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Intrinsic & Extrinsic Sizing Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Transforms Module Level 1
Jointly developed with SVG Working Group.		 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Image Values and Replaced Content Module Level 4 W3C Disclose No open exclusion opportunity Add licensing information N/A
Filter Effects Module Level 1
Jointly developed with SVG Working Group.		 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Overflow Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Shapes Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
Web Animations 1.0
Jointly developed with SVG Working Group.		 W3C Disclose No open exclusion opportunity Add licensing information N/A
DOMMatrix interface
Jointly developed with SVG Working Group.		 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Display Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Font Loading Module Level 3 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Line Grid Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Scoping Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Will Change Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
Geometry Interfaces Module Level 1
Jointly developed with SVG Working Group.		 W3C Disclose No open exclusion opportunity Add licensing information N/A
Non-element Selectors Module Level 1 W3C Disclose No open exclusion opportunity Add licensing information N/A
Media Queries Level 4 W3C Disclose No open exclusion opportunity Add licensing information N/A
CSS Inline Layout Module Level 3 W3C Disclose Exclude until 17 May 2015 Add licensing information N/A
CSS Pseudo-Elements Module Level 4 W3C Disclose Exclude until 14 June 2015 Add licensing information N/A
Recommendations
Specification Policy Disclosures
CSS Namespaces Module Level 3 W3CNone
CSS Style Attributes W3CNone
CSS Color Module Level 3 W3CNone
Media Queries W3CNone
Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification W3CNone

See the detailed information on how to disclose a patent, how to exclude a patent claim and how to add licensing terms below.

Note: If a specification does not appear in this table, the group may have identified it as being "informative only." To add or modify an item in this table, please refer to the IPP instructions.

Patent Disclosures and Claim Exclusions

This section summarizes patent disclosures by participants in W3C's Cascading Style Sheets (CSS) Working Group as required by section 6 of the 5 February 2004 W3C Patent Policy. Note: This disclosure mechanism applies to all W3C Working Groups after 15 February 2004, per the Patent Policy Transition Procedure.

W3C takes no position regarding either:

  1. 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
  2. the extent to which any license under such rights might or might not be available from those not participating in this group.

W3C Members are obligated to disclose a patent when they receive a request for disclosure and have personal knowledge of the patent under the following conditions:

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

Anyone else may also make a disclosure.

Known Disclosures

Disclosures for CSS 2D Transforms

The entry in the first column links to details about the disclosed patent, including any excluded claims or additional licensing information that has been provided.

Patent for CSS 2D TransformsLicensingNotes
Laid-open/published patent application #12/397,325 (US) held by Apple, Inc. Royalty-Free

Disclosures for CSS 3D Transforms Module Level 3

The entry in the first column links to details about the disclosed patent, including any excluded claims or additional licensing information that has been provided.

Patent for CSS 3D Transforms Module Level 3LicensingNotes
Laid-open/published patent application #12/397,325 (US) held by Apple, Inc. Royalty-Free

Disclosures for CSS Animations

The entry in the first column links to details about the disclosed patent, including any excluded claims or additional licensing information that has been provided.

Patent for CSS AnimationsLicensingNotes
Laid-open/published patent application #12/397,325 (US) held by Apple, Inc. Royalty-Free

Disclosures for CSS Transitions

The entry in the first column links to details about the disclosed patent, including any excluded claims or additional licensing information that has been provided.

Patent for CSS TransitionsLicensingNotes
Laid-open/published patent application #12/397,325 (US) held by Apple, Inc. Royalty-Free

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 Cascading Style Sheets (CSS) Working Group should use the Cascading Style Sheets (CSS) Working Group patent disclosure form.

Disclosures from the general public should be sent to the Staff Contacts of this group.

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 Cascading Style Sheets (CSS) 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 Cascading Style Sheets (CSS) 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 and section 2 of the Patent Policy Transition Procedure 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 Reference 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 Last Call), 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 (yet) address that granularity. Also, in some edge cases (discussed in the FAQ), Participants, depending on when they joined the Working Group, will have different Reference Drafts; the summary below does not reflect this case.

History of Exclusion Opportunities

CSS Namespaces Module Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 01 January 1970
  2. Call for exclusion sent on 15 February 2008; opportunity ended on 26 September 2006
CSS Multi-column Layout Module
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 30 June 2009; opportunity ended on 29 August 2009
CSS Paged Media Module Level 3
  1. Call for exclusion sent on 10 October 2006; opportunity ended on 26 September 2006
Selectors Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 10 March 2009; opportunity ended on 09 May 2009
CSS Text Module Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 26 September 2006
  2. Call for exclusion sent on 10 October 2013; opportunity ended on 09 December 2013
CSS Backgrounds and Borders Module Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 15 October 2009; opportunity ended on 14 December 2009
  3. Call for exclusion sent on 15 June 2010; opportunity ended on 11 August 2010
  4. Call for exclusion sent on 12 March 2012; opportunity ended on 14 April 2012
  5. Call for exclusion sent on 04 February 2014; opportunity ended on 05 April 2014
CSS basic box model
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
CSS Cascading and Inheritance Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 30 July 2013; opportunity ended on 28 September 2013
CSS Color Module Level 3
  1. Call for exclusion sent on 22 July 2008; opportunity ended on 18 October 2008
CSS Fonts Module Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 12 July 2013; opportunity ended on 09 December 2013
Media Queries
  1. Call for exclusion sent on 23 April 2009; opportunity ended on 14 December 2008
CSS Ruby Layout Module Level 1
  1. Call for exclusion sent on 16 February 2012; opportunity ended on 27 November 2011
CSS Values and Units Module Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 12 March 2012; opportunity ended on 07 May 2012
CSS3 module: Border
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
CSS3 module: line
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
CSS Lists and Counters Module Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
CSS3 Generated and Replaced Content Module
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
CSS Speech Module
  1. Call for exclusion sent on 07 December 2010; opportunity ended on 26 September 2006
  2. Call for exclusion sent on 12 September 2011; opportunity ended on 17 October 2011
CSS Syntax Module Level 3
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 06 November 2013; opportunity ended on 04 January 2014
CSS Template Layout Module
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification
  1. Call for exclusion sent on 05 July 2006; opportunity ended on 27 September 2006
  2. Call for exclusion sent on 06 November 2006; opportunity ended on 05 January 2007
CSSOM View Module
  1. Call for exclusion sent on 28 February 2008; opportunity ended on 21 July 2008
CSS 2D Transforms
  1. Call for exclusion sent on 23 March 2009; opportunity ended on 17 August 2009
CSS 3D Transforms Module Level 3
  1. Call for exclusion sent on 23 March 2009; opportunity ended on 17 August 2009
CSS Animations
  1. Call for exclusion sent on 23 March 2009; opportunity ended on 17 August 2009
CSS Flexible Box Layout Module Level 1
  1. Call for exclusion sent on 23 July 2009; opportunity ended on 20 December 2009
  2. Call for exclusion sent on 13 June 2012; opportunity ended on 11 August 2012
  3. Call for exclusion sent on 26 March 2014; opportunity ended on 24 May 2014
  4. Call for exclusion sent on 25 September 2014; opportunity ended on 24 November 2014
CSS Image Values and Replaced Content Module Level 3
  1. Call for exclusion sent on 23 July 2009; opportunity ended on 20 December 2009
  2. Call for exclusion sent on 12 January 2012; opportunity ended on 12 March 2012
CSS Transitions
  1. Call for exclusion sent on 23 March 2009; opportunity ended on 17 August 2009
Cascading Style Sheets (CSS) Snapshot 2010
  1. Call for exclusion sent on 07 December 2010; opportunity ended on 01 May 2011
  2. Call for exclusion sent on 08 March 2011; opportunity ended on 01 May 2011
CSS Writing Modes Level 3
  1. Call for exclusion sent on 07 December 2010; opportunity ended on 01 May 2011
  2. Call for exclusion sent on 26 November 2013; opportunity ended on 25 January 2014
CSS Device Adaptation
  1. Call for exclusion sent on 15 September 2011; opportunity ended on 12 February 2012
CSS Conditional Rules Module Level 3
  1. Call for exclusion sent on 12 September 2011; opportunity ended on 29 January 2012
  2. Call for exclusion sent on 13 December 2012; opportunity ended on 11 February 2013
CSS Exclusions Module Level 1
  1. Call for exclusion sent on 13 December 2011; opportunity ended on 11 May 2012
  2. Call for exclusion sent on 15 March 2012; opportunity ended on 11 May 2012
CSS Grid Layout Module Level 1
  1. Call for exclusion sent on 07 April 2011; opportunity ended on 04 September 2011
CSS Regions Module Level 1
  1. Call for exclusion sent on 09 June 2011; opportunity ended on 06 November 2011
  2. Call for exclusion sent on 08 September 2011; opportunity ended on 06 November 2011
CSS Object Model (CSSOM)
  1. Call for exclusion sent on 12 September 2011; opportunity ended on 08 February 2012
Selectors Level 4
  1. Call for exclusion sent on 29 September 2011; opportunity ended on 26 February 2012
  2. Call for exclusion sent on 29 December 2011; opportunity ended on 26 February 2012
Compositing and Blending Level 1
  1. Call for exclusion sent on 16 August 2012; opportunity ended on 12 January 2013
  2. Call for exclusion sent on 11 October 2013; opportunity ended on 09 December 2013
  3. Call for exclusion sent on 07 January 2014; opportunity ended on 08 March 2014
  4. Call for exclusion sent on 14 January 2015; opportunity ended on 14 March 2015
CSS Counter Styles Level 3
  1. Call for exclusion sent on 09 October 2012; opportunity ended on 08 March 2013
  2. Call for exclusion sent on 18 July 2013; opportunity ended on 16 September 2013
  3. Call for exclusion sent on 28 August 2014; opportunity ended on 25 October 2014
CSS Masking Module Level 1
  1. Call for exclusion sent on 15 November 2012; opportunity ended on 14 April 2013
  2. Call for exclusion sent on 29 October 2013; opportunity ended on 28 December 2013
  3. Call for exclusion sent on 22 May 2014; opportunity ended on 21 July 2014
CSS Text Decoration Module Level 3
  1. Call for exclusion sent on 03 January 2013; opportunity ended on 26 September 2006
CSS Custom Properties for Cascading Variables Module Level 1
  1. Call for exclusion sent on 10 April 2012; opportunity ended on 07 September 2012
  2. Call for exclusion sent on 10 July 2012; opportunity ended on 07 September 2012
  3. Call for exclusion sent on 21 June 2013; opportunity ended on 19 August 2013
  4. Call for exclusion sent on 06 May 2014; opportunity ended on 05 July 2014
CSS Box Alignment Module Level 3
  1. Call for exclusion sent on 13 June 2012; opportunity ended on 09 November 2012
CSS Fragmentation Module Level 3
  1. Call for exclusion sent on 12 March 2012; opportunity ended on 27 July 2012
  2. Call for exclusion sent on 13 June 2012; opportunity ended on 27 July 2012
CSS Positioned Layout Module Level 3
  1. Call for exclusion sent on 08 February 2012; opportunity ended on 06 July 2012
  2. Call for exclusion sent on 10 May 2012; opportunity ended on 06 July 2012
CSS Intrinsic & Extrinsic Sizing Module Level 3
  1. Call for exclusion sent on 27 September 2012; opportunity ended on 24 February 2013
CSS Image Values and Replaced Content Module Level 4
  1. Call for exclusion sent on 11 September 2012; opportunity ended on 08 February 2013
  2. Call for exclusion sent on 11 December 2012; opportunity ended on 08 February 2013
Filter Effects Module Level 1
  1. Call for exclusion sent on 25 October 2012; opportunity ended on 24 March 2013
CSS Overflow Module Level 3
  1. Call for exclusion sent on 18 April 2013; opportunity ended on 15 September 2013
CSS Shapes Module Level 1
  1. Call for exclusion sent on 21 June 2013; opportunity ended on 17 November 2013
  2. Call for exclusion sent on 03 December 2013; opportunity ended on 01 February 2014
  3. Call for exclusion sent on 12 February 2014; opportunity ended on 12 April 2014
Web Animations 1.0
  1. Call for exclusion sent on 25 June 2013; opportunity ended on 22 November 2013
DOMMatrix interface
  1. Call for exclusion sent on 21 September 2013; opportunity ended on 16 February 2014
  2. Call for exclusion sent on 23 December 2013; opportunity ended on 16 February 2014
CSS Display Module Level 3
  1. Call for exclusion sent on 20 February 2014; opportunity ended on 20 July 2014
  2. Call for exclusion sent on 22 May 2014; opportunity ended on 20 July 2014
CSS Font Loading Module Level 3
  1. Call for exclusion sent on 20 February 2014; opportunity ended on 20 July 2014
  2. Call for exclusion sent on 22 May 2014; opportunity ended on 21 July 2014
  3. Call for exclusion sent on 22 May 2014; opportunity ended on 21 July 2014
CSS Line Grid Module Level 1
  1. Call for exclusion sent on 03 April 2014; opportunity ended on 31 August 2014
CSS Scoping Module Level 1
  1. Call for exclusion sent on 03 April 2014; opportunity ended on 31 August 2014
CSS Will Change Module Level 1
  1. Call for exclusion sent on 01 May 2014; opportunity ended on 26 September 2014
Geometry Interfaces Module Level 1
  1. Call for exclusion sent on 22 May 2014; opportunity ended on 19 October 2014
  2. Call for exclusion sent on 26 June 2014; opportunity ended on 25 August 2014
Non-element Selectors Module Level 1
  1. Call for exclusion sent on 03 June 2014; opportunity ended on 31 October 2014
Media Queries Level 4
  1. Call for exclusion sent on 05 June 2014; opportunity ended on 02 November 2014

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.

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.

Any additional licensing information that has been provided is listed below. The section below will be empty when no additional licensing information has been provided.

Note: All actions carried out through this system are reported by email to the relevant parties; copies are sent to w3c-archive@w3.org (Member-readable archive).

The following errors were encountered: Spec 'CSS Namespaces Module Level 3' (11) without FPWD, nor Ref, nor Nth LC! ,Spec 'CSS Namespaces Module Level 3' (11) without FPWD, nor Ref, nor Nth LC!

Maintained by Carine Bournez (carine@w3.org) (originally developed by Dominique Hazaël-Massieux).
$Id: status.php,v 1.282 2015-02-16 09:52:46 carine Exp $
  翻译：