COPYRIGHT CLEARANCE CENTER, INC.
16Patents
6Active
16Granted
38Portfolio score
Filing activity: Apr 1, 1996 → Sep 25, 2020 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5991876A | Electronic rights management and authorization system | Physics | 274 | Expired |
| US7130831B2 | Limited-use browser and security system | Physics | 142 | Expired |
| US7299500B1 | Method and apparatus for secure delivery and rights management of digital content at an unsecure site | Electricity | 37 | Expired |
| US6618808B1 | Electronic rights management and authorization system | Physics | 32 | Expired |
| US7373330B1 | Method and apparatus for tracking and controlling e-mail forwarding of encrypted documents | Electricity | 31 | Expired |
| US7225157B2 | Limited-use browser and security system | Physics | 31 | Expired |
| US6859880B2 | Process for managing and authorizing rights in a computer system | Physics | 26 | Expired |
| US7493499B1 | Method and apparatus for secure delivery and rights management of digital content | Electricity | 25 | Expired |
| US6795922B2 | Electronic rights management and authorization system | Physics | 25 | Expired |
| US7324648B1 | Method and apparatus for secure key delivery for decrypting bulk digital content files at an unsecure site | Electricity | 22 | Expired |
| US7360098B2 | Process for managing and authorizing rights in a computer system | Physics | 5 | Active |
| US7827188B2 | Method and apparatus for converting a document universal resource locator to a standard document identifier | Physics | 4 | Active |
| US7711648B2 | Method and apparatus for obtaining content license rights via a document link resolver | Physics | 2 | Active |
| US9275195B1 | Intermediated rights management | Physics | 1 | Active |
| US8201242B2 | Method and apparatus for verifying content reuse rights and resolving rights in the presence of multiple licenses | Physics | 0 | Active |
| US11663274B2 | Reference-based document ranking system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.