| Utility: Integrated band splitter for scaling dual-band ROADM Filling date: 6 Sep 2025 Issue date: 8 Mar 2022 | 29 Mar 2021 | 8 Mar 2022 |
| Utility: Programmatically configured switches and distributed buffering across fabric interconnect Filling date: 6 Sep 2025 Issue date: 8 Mar 2022 | 28 Jul 2020 | 8 Mar 2022 |
| Utility: Resolving label depth and protection in segment routing Filling date: 6 Sep 2025 Issue date: 8 Mar 2022 | 21 Feb 2020 | 8 Mar 2022 |
| Utility: Systems and methods for proactive network operations Filling date: 6 Sep 2025 Issue date: 8 Mar 2022 | 7 Aug 2019 | 8 Mar 2022 |
| Utility: Optical time-domain reflectometer interoperable trunk switch Filling date: 6 Sep 2025 Issue date: 22 Feb 2022 | 14 Aug 2020 | 22 Feb 2022 |
| Utility: Enhancement to the IS-IS protocol for eliminating unwanted network traffic Filling date: 6 Sep 2025 Issue date: 15 Feb 2022 | 15 May 2019 | 15 Feb 2022 |
| Utility: Apparatus and methods for high frequency clock generation Filling date: 6 Sep 2025 Issue date: 8 Feb 2022 | 16 Dec 2020 | 8 Feb 2022 |
| Utility: Shared risk representation in networks for troubleshooting, assignment, and propagation across layers Filling date: 6 Sep 2025 Issue date: 1 Feb 2022 | 8 Jan 2020 | 1 Feb 2022 |
| Utility: Phase skipping technique for high-speed, high-phase number delay locked loop Filling date: 6 Sep 2025 Issue date: 25 Jan 2022 | 10 May 2021 | 25 Jan 2022 |
| Utility: Packet processing framework Filling date: 6 Sep 2025 Issue date: 25 Jan 2022 | 28 Oct 2016 | 25 Jan 2022 |
| Utility: Managing trench depth in integrated systems Filling date: 6 Sep 2025 Issue date: 18 Jan 2022 | 10 Jun 2020 | 18 Jan 2022 |
| Utility: Free-carrier absorption variable optical attenuators and thermal phase shifters formed by an optical waveguide having multiple passes in an intrinsic region Filling date: 6 Sep 2025 Issue date: 18 Jan 2022 | 19 Jul 2019 | 18 Jan 2022 |
| Utility: Re-calibrating an in-service optical multiplex section (OMS) Filling date: 6 Sep 2025 Issue date: 11 Jan 2022 | 22 Dec 2020 | 11 Jan 2022 |
| Utility: Differential clock recovery using a global reference time Filling date: 6 Sep 2025 Issue date: 11 Jan 2022 | 24 Aug 2020 | 11 Jan 2022 |
| Utility: Thermal control system with passive thermostatic actuators for passive thermal management of pluggable optics in an optical telecom platform Filling date: 6 Sep 2025 Issue date: 11 Jan 2022 | 15 Oct 2019 | 11 Jan 2022 |
| Utility: Apparatus and methods for digital fractional phase locked loop with a current mode low pass filter Filling date: 6 Sep 2025 Issue date: 4 Jan 2022 | 23 Nov 2020 | 4 Jan 2022 |
| Utility: Printed circuit boards and methods for manufacturing thereof for RF connectivity between electro-optic phase modulator and Digital Signal Processor Filling date: 6 Sep 2025 Issue date: 4 Jan 2022 | 2 Jun 2020 | 4 Jan 2022 |
| Utility: Populating capacity-limited forwarding tables in routers to maintain loop-free routing Filling date: 6 Sep 2025 Issue date: 4 Jan 2022 | 28 Apr 2020 | 4 Jan 2022 |
| Utility: Managing stray light absorption in integrated photonics devices Filling date: 6 Sep 2025 Issue date: 4 Jan 2022 | 14 Jan 2020 | 4 Jan 2022 |
| Utility: Carrying a timestamp in radio over ethernet Filling date: 6 Sep 2025 Issue date: 28 Dec 2021 | 24 Aug 2020 | 28 Dec 2021 |
| Utility: Integrated polarimeter in an optical line system Filling date: 6 Sep 2025 Issue date: 28 Dec 2021 | 17 Jul 2020 | 28 Dec 2021 |
| Utility: Scaling operations, administration, and maintenance sessions in packet networks Filling date: 6 Sep 2025 Issue date: 21 Dec 2021 | 30 Sep 2019 | 21 Dec 2021 |
| Utility: Highly linear phase rotators with continuous rotation Filling date: 6 Sep 2025 Issue date: 14 Dec 2021 | 8 Sep 2020 | 14 Dec 2021 |
| Utility: Optical fiber characterization measurement systems and methods Filling date: 6 Sep 2025 Issue date: 14 Dec 2021 | 15 May 2019 | 14 Dec 2021 |
| Utility: High resolution analog to digital converter with factoring and background clock calibration Filling date: 6 Sep 2025 Issue date: 7 Dec 2021 | 22 Jan 2021 | 7 Dec 2021 |
| Utility: Apparatus and methods for low power clock generation in multi-channel high speed devices Filling date: 6 Sep 2025 Issue date: 7 Dec 2021 | 2 Dec 2020 | 7 Dec 2021 |
| Utility: Extending the optical spectrum of an optical network Filling date: 6 Sep 2025 Issue date: 7 Dec 2021 | 28 Oct 2020 | 7 Dec 2021 |
| Utility: OpenFEC error marking Filling date: 6 Sep 2025 Issue date: 23 Nov 2021 | 13 Jan 2021 | 23 Nov 2021 |
| Utility: EVPN signaling using segment routing Filling date: 6 Sep 2025 Issue date: 23 Nov 2021 | 8 May 2020 | 23 Nov 2021 |
| Utility: Self-optimizing fabric architecture and self-assembling network Filling date: 6 Sep 2025 Issue date: 23 Nov 2021 | 15 Apr 2020 | 23 Nov 2021 |
| Utility: Learning alarm and PM threshold values in network elements based on actual operating conditions Filling date: 6 Sep 2025 Issue date: 23 Nov 2021 | 11 Nov 2019 | 23 Nov 2021 |
| Utility: High-density network element cooling via unequipped pluggable optical module cages Filling date: 6 Sep 2025 Issue date: 23 Nov 2021 | 1 Nov 2019 | 23 Nov 2021 |
| Utility: Distributed precision time protocol transparent clock Filling date: 6 Sep 2025 Issue date: 16 Nov 2021 | 21 Feb 2020 | 16 Nov 2021 |
| Utility: Constraint-based event-driven telemetry Filling date: 6 Sep 2025 Issue date: 9 Nov 2021 | 30 Jan 2020 | 9 Nov 2021 |
| Utility: Congestion drop decisions in packet queues Filling date: 6 Sep 2025 Issue date: 9 Nov 2021 | 3 Sep 2019 | 9 Nov 2021 |
| Utility: Normalizing messaging flows in a microservice architecture Filling date: 6 Sep 2025 Issue date: 9 Nov 2021 | 9 Aug 2019 | 9 Nov 2021 |
| Utility: Digital-to-analog converter and generation of high-bandwidth analog signals Filling date: 6 Sep 2025 Issue date: 9 Nov 2021 | 23 May 2019 | 9 Nov 2021 |
| Utility: Flow and application based processor scheduling for network functions virtualization applications using flow identification based on logical calculations on frame based fields Filling date: 6 Sep 2025 Issue date: 9 Nov 2021 | 21 Dec 2017 | 9 Nov 2021 |
| Utility: Spring-type latch for securing a networking module within a slot of a chassis Filling date: 6 Sep 2025 Issue date: 2 Nov 2021 | 21 Oct 2019 | 2 Nov 2021 |
| Utility: Autonomic resource partitions for adaptive networks Filling date: 6 Sep 2025 Issue date: 19 Oct 2021 | 18 Jan 2019 | 19 Oct 2021 |
| Utility: In-situ fiber characterization using nonlinear skirt measurement Filling date: 6 Sep 2025 Issue date: 5 Oct 2021 | 27 Mar 2019 | 5 Oct 2021 |
| Utility: Measurement of crosstalk Filling date: 6 Sep 2025 Issue date: 28 Sep 2021 | 24 Apr 2020 | 28 Sep 2021 |
| Utility: Utilizing images to evaluate the status of a network system Filling date: 6 Sep 2025 Issue date: 21 Sep 2021 | 5 May 2020 | 21 Sep 2021 |
| Utility: Reinforcement learning for autonomous telecommunications networks Filling date: 6 Sep 2025 Issue date: 21 Sep 2021 | 9 Nov 2018 | 21 Sep 2021 |
| Utility: Systems and methods for sideline processing in a virtual network function Filling date: 6 Sep 2025 Issue date: 21 Sep 2021 | 30 Jul 2018 | 21 Sep 2021 |
| Utility: Routing tables for forwarding packets between switches in a data center network Filling date: 6 Sep 2025 Issue date: 14 Sep 2021 | 18 Oct 2019 | 14 Sep 2021 |
| Utility: Data path retention during control plane failures in a multiprotocol label switching network Filling date: 6 Sep 2025 Issue date: 14 Sep 2021 | 15 Oct 2018 | 14 Sep 2021 |
| Utility: Cooling multiple high-density network pluggable optical modules using a shared heat exchanger Filling date: 6 Sep 2025 Issue date: 7 Sep 2021 | 1 Nov 2019 | 7 Sep 2021 |
| Utility: Reducing connection validation (CV) time in an optical node Filling date: 6 Sep 2025 Issue date: 31 Aug 2021 | 30 Sep 2020 | 31 Aug 2021 |
| Utility: Incorporating a generic associated channel (G-ACh) header and channel-type for connectivity fault management (CFM) packets over multi-protocol label switching (MPLS) Filling date: 6 Sep 2025 Issue date: 31 Aug 2021 | 23 Mar 2020 | 31 Aug 2021 |
