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Method and system for limiting the use of user-specific...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for managing access to media files

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for managing access to media files

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for managing licenses to content

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for managing security tiers

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for modifying and transmitting data...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for operating online classified...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for preventing illegal use of digital...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for preventing skipping playback of a...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for printing image

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for providing a content subscription service

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for providing annotations of a digital work

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for proving ownership of digital data

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for securely distributing computer...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for securely distributing content

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for securely incorporating electronic informat

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for single reactivation of software...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for single reactivation of software...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system for subscription-based, entitlement-driven...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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Method and system to detect invalid and fraudulent...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
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