Patents Microsoft may be infringing...

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Patent Region Patent NR Title
DE 3,629,434 Digital coding process
EP 0,673,135 Network support system
EP 0,566,662 Audio and video transmission and receiving system
US 5,132,992 Audio and video transmission and receiving system
US 5,963,916 Network apparatus and method for preview of music products and compilation of market data
US 4,405,829 Cryptographic communications system and method
US 6,119,147 Method and system for computer-mediated, multi-modal, asynchronous meetings in a virtual space
US 6,330,022 Digital processing apparatus and method to support video conferencing in variable contexts
US 5,982,891 Systems and methods for secure transaction management and electronic rights protection
US 5,949,876 Systems and methods for secure transaction management and electronic rights protection
US 5,627,978 Graphical user interface for multimedia call set-up and call handling in a virtual conference on a desktop computer conferencing system
US 5,585,866 Electronic television program guide schedule system and method including virtual channels
US 5,206,951 Integration of data between typed objects by mutual, direct invocation between object managers corresponding to object types
US 5,421,012 Multitasking computer system for integrating the operation of different application programs which manipulate data objects of different types
US 5,226,161 ntegration of data between typed data structures by mutual direct invocation between data managers corresponding to data types
US 5,845,227 Method and apparatus for providing shortest elapsed time route and tracking information to users
US 6,449,634 Method and system for remotely sensing the file formats processed by an E-mail client
US 6,184,868 Haptic feedback control devices
US 5,999,168 Haptic accelerator for force feedback computer peripherals
US 5,774,670 Persistent client state in a hypertext transfer protocol based client-server system

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