Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7711119 | Method and apparatus for transition of encryption key during an ongoing media communication session | Brendan Brett | 2010-05-04 |
| 7463615 | System and method for extended SIP headers for CDMA parameters | Dan Vassilovski, Robert S. Daley | 2008-12-09 |
| 7130424 | Systems and methods for utilizing an application from a native portable device within a non-native communications network | — | 2006-10-31 |
| 6990119 | Method and apparatus to facilitate a transparent service option transition | Dan Vassilovski, James Tomcik, Stephen Carter, Yu-Dong Yao | 2006-01-24 |
| 6845092 | System and method for mobile station authentication using session initiation protocol (SIP) | Dan Vassilovski | 2005-01-18 |