United States

• U.S. Patent No. 8,542,815, issued September 24, 2013, generally relates to, among other things, classifying a call as pertaining to a public network or a private network based on a match of one or more attributes associated with a caller and an identifier associated with a callee and network classification criteria.
• U.S. Patent No. 9,179,005, issued November 3, 2015, generally relates to, among other things, routing communications by producing a public or private routing message based on a classification criteria of one or more attributes associated with a caller and an identifier associated with a callee.
• U.S. Patent No. 9,537,762, issued January 3, 2017, generally relates to, among other things, classifying a communication as pertaining to a first or second network based on attributes associated with a first participant to the communication and classification criteria which may include whether a second participant to the communication is registered with the system.
• U.S. Patent No. 9,813,330, issued November 7, 2017, generally relates to, among other things, classifying a communication as a system communication or external network communication based at least in part on comparing attributes associated with a first participant in a communication with an identifier associated with a second participant.
• U.S. Patent No. 9,826,002, issued November 21, 2017, generally relates to, among other things, classifying a communication as a system communication or external network communication based at least in part on a new second participant identifier produced by processing a second participant identifier based on a first participant’s attributes.
• U.S. Patent No. 9,948,549, issued on April 17, 2018, generally relates to, among other things, classifying a communication as a system communication or external network communication and producing a routing message based at least in part on a new second participant identifier produced by processing a second participant identifier based on a first participant’s attributes.
• U.S. Patent No. 9,935,872, issued April 3, 2018, generally relates to, among other things, using at least one first participant attribute to determine whether a communication initiated from a first participant device to a second participant device is allowed to proceed, and if it is allowed to proceed, whether it should be routed to its destination via a first network element or a second network element.
• U.S. Patent No. 10,218,606, issued February 26, 2019, relates to, among other things, processing at least one first participant attribute and a second participant identifier to determine whether a communication initiated from a first participant device to a second participant device in a packet switched or Internet Protocol (IP) based communication system can be routed using either a local cluster/node or a remote cluster/node.

International

9. European Patent No. 2,084,868, granted May 30, 2018, relates to, among other things, the classification/routing of communications and is similar to the counterpart U.S. patents directed to this subject matter (see descriptions of U.S. patents above).
10. Indian Patent No. 287,412, granted September 15, 2017, relates to, among other things, the classification/routing of communications and is similar to the counterpart U.S. patents directed to this subject matter (see descriptions of U.S. patents above).
11. Indian Patent No. 450,851, granted September 09, 2023, relates to, among other things, the classification/routing of communications and is similar to the counterpart U.S. patents directed to this subject matter (see descriptions of U.S. patents above).
12. Indian Patent No. 450,865, granted September 09, 2023, relates to, among other things, the classification/routing of communications and is similar to the counterpart U.S. patents directed to this subject matter (see descriptions of U.S. patents above).
13. Indonesian Patent No. IDP000040412 similarly relates to classification/routing (see above patent descriptions).
14. Brazil Patent No. PI 0718312-7, granted May 19, 2020, similarly relates to classification/routing (see above).
15. Canadian Patent No. 2,668,025, issued February 25, 2020, relates to classification/routing, similarly to the counterpart U.S. patents described above.
16. Canadian Patent No. 3,045,672, issued January 19, 2021, relates to classification/routing, similarly to the counterpart U.S. patents described above.
17. Canadian Patent No. 3,032,707, issued February 9, 2021, relates to classification/routing, similarly to the counterpart U.S. patents described above.

United States

1. U.S. Patent No. 8,422,507, issued April 16, 2013, applies, for example, to lawful intercept scenarios in which communications originating in an Internet Protocol (IP) network system from a subscriber to another party occur through a media relay, where information associated with the subscriber profile meets intercept criteria, such that a routing message is produced to cause the media relay to send a copy of the communications to a mediation device.
2. U.S. Patent No. 9,143,608, issued September 22, 2015, applies, for example, to lawful intercept scenarios in which communications originating in an Internet Protocol (IP) network system from a subscriber to another party occur through a media relay, and where a profile associated with the subscriber includes intercept determination information and destination information indicating where to send monitored communications. For example, when intercept criteria are met, at least some of the intercept determination information and the destination information are included in a routing message.
3. U.S. Patent No. 9,549,071, issued January 17, 2017, generally relates to, among other things, lawfully intercepting Internet Protocol (IP) communications between a first party and a second party, where a profile associated with the first or second party includes intercept determination information and destination information for one of the first or second party that is to be monitored, the destination information indicating where to send the monitored communications. For example, when an intercept criterion is met, at least some of the intercept determination information and the destination information is included in a routing message.
4. U.S. Patent No. 10,038,779, issued July 31, 2018, generally relates to lawfully intercepting VoIP or other data communications between a first party and a second party, based on an intercept request message that contains (a) an identification of at least one party whose communications are to be monitored, (b) intercept determination information, and (c) destination information indicating where copies of intercepted communications are to be sent. For example, when an intercept criterion is met, at least some intercept determination information and destination information is included in a routing message.
5. U.S. Application no. 15/861,572, also relates to lawfully intercepting VoIP or other data communications between parties.

International

6. European Patent No. 2,090,024, granted March 4, 2020, similarly relates to lawful intercept of communications.
7. Canadian Patent No. 2,670,510, granted December 22, 2020, also relates to lawful intercept of communication.

United States

1. U.S. Patent No. 8,630,234, issued January 14, 2014, generally relates to, among other things, a method of roaming with a mobile phone.    For example, the mobile phone could receive an access code reply message from the access server that includes a temporary access code allowing the mobile phone to initiate a call to the callee using the access code.  In some applications, the mobile phone can avoid incurring long-distance roaming charges.
2. U.S. Patent No. 10,880,721, issued December 29, 2020, generally relates to, among other things, a method of roaming or establishing communications with a wireless device from various locations.

International

3. Canadian Patent No. 2,732,148, issued April 25, 2018, is directed to, among other things, subject-matter similar to the counterpart U.S. patents (see description above).

United States

1. U.S. Patent No. 8,537,805, issued September 17, 2013, relates to, among other things, handling emergency calls from a caller in a voice over IP (VoIP) system.  The ‘805 Patent could apply, for example, when a routing request message is received and the contents of an emergency call identifier field of a profile match the callee identifier.  In this example, if the caller identifier is not associated with a pre-associated identifier, a temporary identifier is associated with the caller.  When the emergency call flag is active, for example, a routing message establishes a route between the caller and an emergency response center, the routing message including an emergency response center identifier from a profile associated with the caller and the DID identifier associated with the caller.
2. U.S. Patent No. 9,565,307, issued February 7, 2017, relates to, among other things, routing emergency communications.  The ‘307 Patent could apply, for example, when a routing request includes the caller identifier and the callee identifier, and where the caller identifier identifies a profile associated with the caller that includes an emergency call identifier (e.g., “911”) and an emergency response center identifier. In this example, when the callee identifier matches the emergency call identifier, a routing message establishes the call, the routing message having a first portion including the emergency response center identifier and a second portion, which portion may include either a temporary or pre-assigned identifier associated with the caller, for example.

International

3. Canadian Patent No. 2,681,984, issued April 2, 2019, relates to similar subject-matter.

United States

1. U.S. Patent No. 8,774,378, issued July 8, 2014, could apply, for example, to scenarios where a communication system operator and a reseller of communication services allocate charges incurred by a user.  In this example, the process for attributing charges may involve determining a user cost based on a chargeable time and free time associated with the user, where the chargeable time is based on communication session time and a pre-defined billing pattern—then account balances for the user, reseller and system operator are updated accordingly.
2. U.S. Patent No. 9,998,363, issued June 12, 2018, relates to, among other things, attributing charges for communications services provided in a communications system for a communication session between a user's device and a destination device.

International

3. Canadian Patent No. 2,916,220, issued November 26, 2019, relates to, among other things, attributing charges for communications services, similarly to the counterpart U.S. patents described above.

United States

1. U.S. Patent No. 9,137,385, issued September 15, 2015, generally relates to, among other things, determining a time for permitting a communication session to be conducted (e.g., a time-to-live or TTL). This patent has not been asserted in litigation.

International

2. Canadian Patent No. 2,916,217, issued April 16, 2019, which also relates to determining a time for permitting a communication session to be conducted (e.g., a time-to-live or TTL).

United States

1. U.S. Patent No. 8,675,566, issued March 18, 2014, generally relates to, among other things, uninterrupted   transmission of internet protocol (IP) transmissions during endpoint changes.  
2. U.S. Patent No. 9,154,417, issued October 6, 2015, generally relates to, among other things, uninterrupted transmission, where in response to an IP transmission at a media relay, a session information record is processed in a certain manner.
3. U.S. Patent No. 10,021,729, issued July 10, 2018, generally relates to, among other things, facilitating an uninterrupted internet protocol (IP) communication session, involving internet protocol transmissions between a first entity and a second entity, during endpoint changes.
4. U.S. Patent No. 10,932,317, issued February 23, 2021, generally relates to facilitating uninterrupted transmission of an internet protocol (IP) communication session through a media relay during endpoint changes.

International

5. European Patent No. 2478678 and Canadian Patent No. 2812174 relate to subject matter similar to the aforesaid U.S. patents (see above descriptions).