W3CArchitecture DomainXML

XML Schema Working Group
IPR disclosures

This page lists patent disclosures relative to the W3C XML Schema specification (part 0, part 1, part 2).

Any individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) with respect to this specification can and should disclose the information in accordance with section 6 of the W3C Patent Policy by filling out the appropriate disclosure form. See the W3C's IPP (Implementation of the Patent Policy) system for more information.

The following statements are the patent disclosures and license commitments associated with the specifications produced by the XML Schema Working Group and provided by members of the XML Schema Working Group as required by the W3C Current Patent Practice.

W3C does not take a position regarding 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, nor the extent to which any license under such rights might or might not be available. Copyright of Working Group deliverables is vested in the W3C.

Per the W3C Current Patent Practice, disclosures made by W3C members are to be made public. In some cases, it is not clear whether the member intended the specifics of the disclosure to be member-confidential or public; in those cases, the disclosure is described without being reproduced.

Note: Members of the Working Group are expected to disclose any intellectual property they have in the area. This Working Group will work on a royalty-free basis, as defined in the W3C Current Patent Practice document. The Working Group is thus obliged to produce a specification which relies only on intellectual property available on a royalty-free basis.

Many of the disclosures listed here were made in response to the call for participation (or the revised call for participation) in the XML Schema Working Group. (The full text is therefore often accessible only to members of the W3C, or to the W3C Team.) The call for participation asked respondents to check boxes next to one of the following descriptions:

  • To the best of my personal knowledge, my organization has no patents essential to the above deliverables.
  • My organization has patents that may be essential to the above deliverables. (Patent numbers must be listed here.)
  • My organization will respond to this question at a later date, indicating one of the two previous options. I understand that failure to indicate one of the above two options by the time the Recommendation-track deliverable(s) enter Candidate Recommendation (or Proposed Recommendation if there is no Candidate Recommendation) will render my disclosure obligation incomplete, as described in the Current Patent Practice Note.

Additionally, respondents could check the following box:

  • My organization may or may not have patents essential to the above deliverables. If we do, we agree to license them on Royalty-Free terms (as defined in section 6 of the Current Patent Practice Note) to all implementers, whether or not they are Members of W3C.

The sections below list members of the W3C or of the Working Group who responded in each of these ways. Some disclosures have been made using different wording; these are listed separately, as are the names of W3C members represented on the working group which have not yet made a complete IPR disclosure.

No essential patents disclosed

The following organizations represented on the XML Schema Working Group have filed disclosures saying

To the best of my personal knowledge, my organization has no patents essential to the above deliverables.

  • Charles Campbell (invited expert) [text (Member-only link)]
  • Contivo (Dave Hollander) [text (Team-only link)]
  • Corel (Stephen Mereu) [text (Team-only link)]
  • DaimlerChrysler Research and Technology (Mario Jeckle) [text (Member-only link)]
  • Defense Information Systems Agency (Leonard Swatski) [text (Team-only link)]
  • Defense Logistics Information Service (Dan Fox) [text (Team-only link)]
  • DSTC Pty Ltd (Hoylen Sue) [text (Team-only link)]
  • University of Edinburgh (Henry S. Thompson) [text (Team-only link)]
  • Matthew Fuchs (invited expert) [text (Member-only link)]
  • Health Level Seven (Paul V. Biron) [text (Team-only link)]
  • IBM (Arnaud LeHors) [text (Team-only link)]
  • IDEAlliance (Marion Elledge) [text (Member-only link)]
  • Markup Technology (Henry S. Thompson) [text (Team-only link)]
  • Oracle (Donald Deutsch) [text (Team-only link)]
  • Sun Microsystems (Eduardo Gutentag) [text (Team-only link)]
  • NIST (Mark Skall) [text (Member-only link)]
  • TIBCO Software (Don Mullen) [text (Team-only link)]
  • Uniform Code Council (Ted Osinski) [text (Team-only link)]
  • Priscilla Walmsley (invited expert) [text (Member-only link)]
  • XML Global Technologies (David Webber) [text (Member-only link)]

Some members additionally indicated that any essential patents they may have will be licensed on Royalty-Free terms; see below.

Possibly essential patents disclosed

To date, no W3C members have disclosed that they hold patents that may be essential to the deliverables of the XML Schema Working Group.

No disclosure

The following organizations have not filed disclosures.

  • [None]

Other disclosures

The following organizations have filed disclosures with other wording.

Peter Chen

I do not have any IPR claims that may be essential technology for implementing the W3C XML Schema specification.

[text (Member-only link)]

Mary Holstege

I do not have any IPR claims that may be essential technology for implementing the W3C XML Schema specification.

[text (Member-only link)]

Microsoft (David Turner)

I do not have personal knowledge of any IPR claims held by Microsoft Corporation regarding the above-referenced deliverables.

[text (Team-only link)]

National Association of Convenience Stores (David Ezell)

Speaking as the AC rep for NACS, we do not hold any IPR claims that may be essential technology for implementing the W3C XML Schema specification.

[text (Member-only link)]

webMethods (Asir Vedamuthu)

I do not have personal knowledge of any IPR claims held by webMethods, Inc. regarding XML Schema.

[text (Member-only link)]

Royalty-free licensing

The following organizations have filed disclosures saying

My organization may or may not have patents essential to the above deliverables. If we do, we agree to license them on Royalty-Free terms (as defined in section 6 of the Current Patent Practice Note [3]) to all implementers, whether or not they are Members of W3C.

  • Contivo (Dave Hollander) [text (Team-only link)]
  • DaimlerChrysler Research and Technology (Mario Jeckle) [text (Member-only link)]
  • DSTC Pty Ltd (Hoylen Sue) [text (Team-only link)]
  • Sun Microsystems (Eduardo Gutentag) [text (Team-only link)]
  • TIBCO Software (Don Mullen) [text (Team-only link)]
  • Uniform Code Council (Ted Osinski) [text (Team-only link)]
C. M. Sperberg-McQueen, W3C Team contact

$Date: 2004/10/06 21:54:56 $