US 12166869

US Patent 12166869 (referred to as US12166869B2) is titled "Key derivation for a module using an embedded universal integrated circuit card".

Here's a summary of its details:

• Assignee: Network 1 Technologies Inc and M2M and IoT Technologies LLC. The listed assignees may be inaccurate, as Google has not performed a legal analysis and makes no representation as to the accuracy of the list.
• Inventor: John A. Nix.
• Filing Date: August 3, 2023.
• Issue Date: December 10, 2024.

Abstract:
The patent describes methods and systems for a module to securely and efficiently derive keys for communication with a server and a wireless network, particularly when using an embedded universal integrated circuit card (eUICC). This includes shared secret keys and key pairs for Public Key Infrastructure (PKI). The module and a server (associated with a wireless network or mobile network operator) utilize cryptographic algorithms for data exchange. The module can generate or derive module private and public keys, either initially or subsequently, and store the private key in nonvolatile memory. The module connects to a wireless network, which may be a wireless wide area network (WAN) like LTE, using an initial pre-shared secret key K typically found in a UICC or eUICC profile.

Plain-language Overview of Independent Claims:
I do not have authoritative access to the full text of the claims to provide a plain-language overview of each independent claim. To obtain this, a direct search of the USPTO database for the full patent text, including all claims, would be required (e.g., via USPTO Patent Public Search tool).

CAFC 2026 Dockets:
A search of CAFC dockets for 2026 does not explicitly mention US patent 12166869. However, there is a PTAB case IPR2026-00117 filed related to this patent, which is currently pending. Additionally, a US case related to this patent has been filed in the Texas Eastern District Court. It is important to note that CAFC dockets would generally show appeals from PTAB decisions or district court cases. The current date is April 26, 2026, and information regarding recent CAFC decisions (such as those from March and May 2026) is available, but these do not directly cite patent 12166869.