Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9379914 | Method and system for implementing aggregate endpoints on IMS networks | Min Lu, Martin Dolly, Saul Daniel Fishman, Gerald L. Hoover, Mark A. Ratcliffe +4 more | 2016-06-28 |
| 8929256 | Third party charging for SIP sessions | Yigang Cai, Eric Harold Henrikson, E-Ling Lou, Bharat H. Patel | 2015-01-06 |
| 8289885 | Third party charging for SIP sessions | Yigang Cai, Eric Harold Henrikson, E-Ling Lou, Bharat H. Patel | 2012-10-16 |
| 8068469 | Surrogate registration in internet protocol multimedia subsystem for users indirectly coupled via an end point | Guy J. Zenner | 2011-11-29 |
| 8037196 | Method for maintaining communication between communication devices having inconsistent protocols | — | 2011-10-11 |