US 11089450

Here's a concise summary of US Patent 11089450, based on the provided patent text:

US Patent: 11089450

• Title: Messaging service in a wireless communications network
• Assignee: Rembrandt Messaging Technologies LP [cite: US11089450B2]
• Inventors: Graham Merrett [cite: US11089450B2]
• Filing Date: December 13, 2019 [cite: US11089450B2]
• Issue Date: August 10, 2021 [cite: US11089450B2]
• Abstract: A method may comprise receiving a first message formatted according to an SMS format, by a first mobile wireless device from a second mobile wireless device, via a mobile operator base station. The first mobile wireless device may subscribe to a service for transmitting and receiving packet switched messages, via the Internet and the mobile operator base station. The method may further comprise retrieving, by the first mobile wireless device, information corresponding to at least one mobile phone number of the second mobile wireless device and transmitting, by the first mobile wireless device, after the subscribing, a request including at least the information corresponding to the at least one mobile phone number of the second mobile wireless device, to determine whether the mobile wireless device corresponds to a subscriber of the service. [cite: US11089450B2]

Plain-Language Overview of Independent Claims:

• Claim 1 (Method for First Mobile Wireless Device - SMS initiated): This claim describes a method where a first mobile device receives an SMS message from a second mobile device. After the first device subscribes to a packet-switched messaging service (not SMS, MMS, or EMS), it sends a request using the second device's phone number to check if the second device is also a subscriber. If the second device is a subscriber, the first device then formats a new message using the packet-switched service's format (not SMS, MMS, or EMS). The initial SMS message is received before the first device subscribes to the packet-switched service. [cite: US11089450B2]

• Claim 9 (Method Performed by First Mobile Wireless Device - SMS initiated, no mobile operator base station mentioned initially): Similar to Claim 1, this claim outlines a method performed by a first mobile wireless device. It receives an SMS message from a second device, then subscribes to a packet-switched messaging service via the Internet. After subscribing, it transmits a request with the second device's phone number to check if the second device is a service subscriber. Upon receiving a positive response, the first device formats a second message using the service's specific format (not SMS, MMS, or EMS). The first message is received before the subscribing. A key distinction here from Claim 1 is the explicit omission of "via a mobile operator base station" for the initial reception of the first message, and it also specifies that the first device may not have the second device's username or email in memory at the time of the request. [cite: US11089450B2]

• Claim 15 (Method for First Mobile Wireless Device - MMS initiated): This claim describes a method where a first mobile device receives an MMS message from a second mobile device via a mobile operator base station. After the first device subscribes to a packet-switched messaging service (not SMS, MMS, or EMS), it sends a request using the second device's phone number to check if the second device is also a subscriber. If the second device is a subscriber, the first device then formats a new message using the packet-switched service's format (not SMS, MMS, or EMS). The initial MMS message is received prior to the first device subscribing. [cite: US11089450B2]

• Claim 24 (Method Performed by First Mobile Wireless Device - MMS initiated, no mobile operator base station mentioned initially): Similar to Claim 15, this claim details a method performed by a first mobile wireless device. It receives an MMS message from a second device via a mobile operator base station, then subscribes to a packet-switched messaging service via the Internet. After subscribing, it transmits a request with the second device's phone number to check if the second device is a service subscriber. Upon receiving a positive response, the first device formats a second message using the service's specific format (not SMS, MMS, or EMS). The first message is received before the subscribing. Similar to the distinction between Claim 1 and Claim 9, this claim highlights that the first mobile wireless device may not have a user name or email address associated with the second mobile wireless device in memory at the time of transmitting the request. [cite: US11089450B2]

Litigation Information:

The Google Patents page indicates that the family for US11089450B2 has litigation. Specifically:

• A US case was filed in the Texas Western District Court (case/1:24-cv-01199). [cite: US11089450B2]
• A PTAB case IPR2025-01493 was filed (Not Instituted - Procedural). [cite: US11089450B2]
• First worldwide family litigation was filed. [cite: US11089450B2]

Regarding CAFC 2026 dockets, a direct search for "11089450" within the provided CAFC search results did not yield specific dockets for this patent number. The available CAFC search results offered general information and scheduled cases for May, June, and July 2026 but did not provide a function to search for specific patent numbers in litigation. Therefore, I cannot definitively confirm specific CAFC dockets for US11089450 from the live search at this time.