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Sun Microsystem's Patent Claim on CALSCH

This IPR disclosure was submitted by e-mail.

Sections I, II, and IV of "The Patent Disclosure and Licensing Declaration Template for Legacy" have been completed for this IPR disclosure. Additional information may be available in the original submission.

The text of the original IPR disclosure is available further down, and also here:

Update this IPR disclosure. Note: Updates to IPR disclosures must only be made by authorized representatives of the original submitters. Updates will automatically be forwarded to the current Patent Holder's Contact and to the Submitter of the original IPR disclosure.

Submitted Date: May 20, 1998

I. Patent Holder/Applicant ("Patent Holder")
Legal Name: Sun Microsystems, Inc.
II. Patent Holder's Contact for License Application
Name: Erwin J. Basinski, Esq.
Address1: 901 San Antonio Road
Address2: Mail Stop PAL1-521, Palo Alto, CA 94303
Email: hal.jespersen@Sun.COM
III. IETF Document or Other Contribution to Which this IPR Disclosure Relates:
Designations for Other Contributions:CALSCH

The text of the original IPR declaration:

The following email message was received on May 20, 1998:

From: Hal Jespersen 
Subject: Re: Last Call: Internet Calendaring and Scheduling to Proposed Standard

This is to advise the IETF that Sun Microsystems, Inc. (SUN) is
willing to grant licenses under our patents which may be applicable to
the calendaring and scheduling (C&S) standards being developed in the

In this regard, if implementations of the C&S specifications from
the CALSCH committee infringe patents issued to SUN, SUN agrees upon
written request to grant a non-exclusive license under such patents on
a nondiscriminatory basis and on reasonable terms and conditions.

SUN further advises the IETF that SUN and IBM Corporation are joint
owners of a patent application pending that specifically relates to
the Internet Calendaring and Scheduling Core Object Specification
(iCalendar). The full text of the application and allowed claims may
be viewed at URL

Because of the recent discovery of additional prior art (the Chronos
specification--, SUN has filed
a Petition to Withdraw the application from issue in order to permit
the Patent Office to consider this newly discovered art. As a result,
the allowed claims will be reexamined in light of this art. Regardless
of the outcome of this reconsideration, SUN is willing to grant a
no-cost license to any person who would infringe this patent solely by
implementing the iCalendar specification, assuming that the iCalendar
specification is adopted as an IETF Standards-track RFC.

Written requests for licenses may be sent to:

        Erwin J. Basinski, Esq.
        Sun Microsystems, Inc.
        901 San Antonio Road
        Mail Stop PAL1-521
        Palo Alto, CA 94303