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SYSTEM FOR CONTROLLING AND ENFORCING PLAYBACK RESTRICTIONS FOR A MEDIA FILE BY SPLITTING THE MEDIA FILE INTO USABLE AND UNUSABLE PORTIONS FOR PLAYBACK

10/291,210 | U.S. Patent Application

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Location ELECTRONIC
Filed Nov. 8, 2002
Examiner LE HIEN LUU
Class 709
Art Group 2141
Patent No. 7,024,485
Case Type Utility - 709/232000
Status Patented Case
Parent 09/846,823 Patented
Parent 60/201,622 Expired
Parent 60/337,939 Expired
Child 11/117,620 Patented
Child PCT/US02/35903 Published
Child 11/932,648 Patented
Last Updated: 6 years, 1 month ago
Date # Transaction