The titles of the patents:
5978791: Data Processing System Using Substantially Unique Identifiers to Identify Data Items, Whereby Data Items Have the Same Identifiers.
6415280: Identifying and Requesting Data in Network Using Identifiers Which Are Based On Contents of Data.
6928442: Enforcement and Policing of Licensed Content Using Content-based Identifiers.
7802310: Controlling Access to Data in a Data Processing System.
7945539: Distributing and Accessing Data in a Data Processing System.
7945544: Similarity-Based Access Control of Data in a Data Processing System.
7949662: De-duplication of Data in a Data Processing System.
8001096: Computer File System Using Content-Dependent File Identifiers.
8099420: Accessing Data in a Data Processing System.
5978791: Data Processing System Using Substantially Unique Identifiers to Identify Data Items, Whereby Data Items Have the Same Identifiers.
6415280: Identifying and Requesting Data in Network Using Identifiers Which Are Based On Contents of Data.
6928442: Enforcement and Policing of Licensed Content Using Content-based Identifiers.
7802310: Controlling Access to Data in a Data Processing System.
7945539: Distributing and Accessing Data in a Data Processing System.
7945544: Similarity-Based Access Control of Data in a Data Processing System.
7949662: De-duplication of Data in a Data Processing System.
8001096: Computer File System Using Content-Dependent File Identifiers.
8099420: Accessing Data in a Data Processing System.