| Declaration submission | Manual patent holder change | Declaration submission | Declaration submission |
| CN20098161700 | CN20098161700 | CN20098161700 | CN20098161700 |
| 28/10/2009 | 28/10/2009 | 28/10/2009 | 28/10/2009 |
| CN102577504 A 11/07/2012 | CN102577504 A 11/07/2012 | CN102577504 A 11/07/2012 | CN102577504 B 28/01/2015 CN102577504 A 11/07/2012 |
| Method and device for handing over video call from packet switched domain to circuit switched domain | Method and device for handing over video call from packet switched domain to circuit switched domain | Method and device for handing over video call from packet switched domain to circuit switched domain | Method and device for handing over video call from packet switched domain to circuit switched domain |
| | | | |
| | | | |
| CHINA | CHINA | CHINA | CHINA |
| | | | |
| WO2009CN74660 | WO2009CN74660 | WO2009CN74660 | WO2009CN74660 |
| ALCATEL LUCENT SHANGHAI BELL | Alcatel Lucent, except for Alcatel-Lucent Shanghai Bell Co., Ltd. in China | Alcatel Lucent, except for Alcatel-Lucent Shanghai Bell Co., Ltd. in China | ALCATEL LUCENT SHANGHAI BELL |
| | WO2009CN74660 | X | |
| | | | |