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RealNetworks’ Products and Services are protected by one or more of the following U.S. Patents:


HELIX DNA CLIENT embodies the following RealNetworks Patents under RCSL & RPSL:
5,917,835; 6,151,634; 6,731,600; 6,985,932

Codec Patents:
RealAudio: 6,597,961
RealVideo: 6,724,433; 6,731,818; 6,735,338: 6,753,865; 6,760,378
H.264: 6,480,541; 6,765,964

Digital Rights Management (DRM) and Secure Media Patents:
System: 5,991,402
Client: 6,611,813; 7,000,119

REALPLAYER uses Helix DNA Client, RealAudio (RA), RealVideo (RV), DRM Client and also embodies the following RealNetworks Patents:
5,991,402; 6,597,961; 6,480,541; 6,760,721; 6,937,814; 6,996,627

RHAPSODY PLAYER uses HELIX DNA Client, RealAudio (RA), RealVideo (RV), DRM Client and also embodies the following RealNetworks Patents:
5,991,402; 6,597,961; 6,480,541; 6,611,813; 6,760,721; 6,937,814; 6,996,627
Rhapsody Service: 5,583,763

HELIX DNA Content Creation & SERVER Patents:
Encoder: 5,917,835
Server: 6,889,257; 6,731,600; MPEG-4 Systems & 3GPP: 6,487,663; 6,671,807; 6,934,837

HELIX PRODUCER & HELIX UNIVERSAL SERVER Patents:
Mobile Producer: 6,487,663; 6,671,807; 6,934,837
Server: 6,314,466; 6,633,918; 6,731,600; 6,968,387

OTHER PATENTS:
5,734,961; Other Patents Pending