I am currently talking to a start up which is attempting to patent the
one number, one person mobility feature of SIP. The startup defines
their patent in terms of associating a wireless phone number with a
person and static IP address. It sounds to me as though they are trying
to patent an element of the SIP protocol. If so, the patent application
will clearly fail. Does the SIP protocol spell out the implementation
details? Your help would be appreciated.

- Roderick Beck
  Director of Research
  Broadmark Capital
  22 Cortlandt Street, 20th Floor
  NYC, NY 10007
  212-587-7956
  [EMAIL PROTECTED]
  [EMAIL PROTECTED]

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