Skip to main content

IPR Details
RealNetworks IPR Rights to implementors of Real Time Streaming Protocol (RTSP)

The text of the original IPR disclosure is available in the disclosure history.

Submitted: October 1, 1997 under the rules in RFC 2026.

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.

I. Patent Holder/Applicant ("Patent Holder")

Holder legal name RealNetworks

II. Patent Holder's Contact for License Application

Holder contact name Rob Lanphier
Holder contact email
Holder contact info

III. IETF Document or Other Contribution to Which this IPR Disclosure Relates

draft-ietf-mmusic-rtsp ("Real Time Streaming Protocol (RTSP)")
No revisions for this Internet-Draft were specified in this disclosure. The Internet-Draft's revision was 04 at the time this disclosure was posted. Contact the discloser or patent holder if there are questions about which revisions this disclosure pertains to.

IV. Disclosure of Patent Information
i.e., patents or patent applications required to be disclosed by RFC 2026

A. For granted patents or published pending patent applications, please provide the following information:

Patent, Serial, Publication, Registration, or Application/File number(s)

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending Yes

V. Licensing Declaration

The Patent Holder states that its position with respect to licensing any patent claims contained in the patent(s) or patent application(s) disclosed above that would necessarily be infringed by implementation of the technology required by the relevant IETF specification ("Necessary Patent Claims"), for the purpose of implementing such specification, is as follows(select one licensing declaration option only):

Licensing See Text Below for Licensing Declaration
Licensing information, comments, notes, or URL for further information

RealNetworks has applied for one or more patents on technology related to
media streaming. If any patents issued to RealNetworks are required to
implement the Real Time Streaming Protocol (RTSP), RealNetworks intends to
disclose those patents and license them under openly specified and
non-discriminatory terms, and furthermore will not enforce those patents
necessary to comply with the RTSP specification when used solely to implement
RTSP. This will apply irrespective of whether or not the licensee has any
business relationship with RealNetworks. Given where RealNetworks is in
the patent process, details cannot be disclosed at this time, but
RealNetworks intends to disclose such information as soon as it is

Note: The individual submitting this template represents and warrants that he or she is authorized by the Patent Holder to agree to the above-selected licensing declaration.

VI. Contact Information of Submitter of this Form

Submitter name
Submitter email

Only those sections of the relevant entry form where the submitter provided information are displayed above.