US Patent No: 6,854,061
Number of patents in Portfolio can not be more than 2000
Installing and controlling trial software
Stats
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Feb 8, 2005
Issued date -
Oct 15, 2002
filing date -
10/272,140
serial no -
Expired
status
Importance
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Abstract
According to one aspect of the invention, a method of creating a trial software product on a target system is provided. The method consists of intercepting file system calls from an installation process associated with a full software product and, responsive to a write request from the installation process, encrypting data associated with the write request if the write request is associated with one of a predetermined set of critical product files. The predetermined set of critical product files including those product files comprising the full software product that have been identified as files to which access is to be controlled.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,319,705 Method and system for multimedia access control enablement | 612 | 1992 | |
| 5,598,470 Method and apparatus for enabling trial period use of software products: Method and apparatus for utilizing a decryption block | 122 | 1994 | |
| 5,689,560 Method and apparatus for enabling trial period use of software products: method and apparatus for allowing a try-and-buy user interaction | 61 | 1994 | |
| 5,757,907 Method and apparatus for enabling trial period use of software products: method and apparatus for generating a machine-dependent identification | 146 | 1994 | |
| 5,757,908 Method and apparatus for enabling trial period use of software products: method and apparatus for utilizing an encryption header | 91 | 1996 | |
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| 5,563,946 Method and apparatus for enabling trial period use of software products: method and apparatus for passing encrypted files between data processing systems | 296 | 1994 | |
| 5,737,416 Method and apparatus for enabling trial period use of software products: method and apparatus for utilizing a decryption stub | 197 | 1996 | |
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| 5,327,563 Method for locking software files to a specific storage device | 61 | 1992 | |
| 5,628,015 Method for unlocking software files locked to a specific storage device | 24 | 1995 | |
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| 6,195,432 Software distribution system and software utilization scheme for improving security and user convenience | 63 | 1997 | |
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| 4,740,890 Software protection system with trial period usage code and unlimited use unlocking code both recorded on program storage media | 322 | 1983 | |
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| 5,341,429 Transformation of ephemeral material | 347 | 1992 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 8, 2016 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |