System and method for managing transfer of rights using shared state variables

  • US 20050060571A1
  • Filed: 10/04/2004
  • Published: 03/17/2005
  • Est. Priority Date: 06/07/2001
  • Status: Active Grant
First Claim
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1. A method for transferring rights adapted to be associated with items from a rights supplier to a rights consumer, the method comprising:

  • obtaining a set of rights associated with an item, the set of rights including meta-rights specifying derivable rights that can be derived from the meta-rights;

    determining whether the rights consumer is entitled to the derivable rights specified by the meta-rights; and

    deriving at least one right from the derivable rights, if the rights consumer is entitled to the derivable rights specified by the meta-rights, wherein the derived right includes at least one state variable based on the set of rights and used for determining a state of the derived right.

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