| Utility: Secondary side heatsink techniques for optical and electrical modules Filling date: 6 Sep 2025 Issue date: 2 Mar 2021 | 16 Sep 2019 | 2 Mar 2021 |
| Utility: High resolution successive approximation register analog to digital converter with factoring and background clock calibration Filling date: 6 Sep 2025 Issue date: 23 Feb 2021 | 13 May 2020 | 23 Feb 2021 |
| Utility: Flexible ethernet operations, administration, and maintenance systems and methods Filling date: 6 Sep 2025 Issue date: 23 Feb 2021 | 25 Jul 2019 | 23 Feb 2021 |
| Utility: Integrated optical device with manufactured waveguide aperture to block stray light and associated manufacture method Filling date: 6 Sep 2025 Issue date: 23 Feb 2021 | 27 Nov 2018 | 23 Feb 2021 |
| Utility: Traffic engineering for border gateway protocol Filling date: 6 Sep 2025 Issue date: 16 Feb 2021 | 19 Nov 2018 | 16 Feb 2021 |
| Utility: Scalable management plane for a modular network element Filling date: 6 Sep 2025 Issue date: 16 Feb 2021 | 23 Apr 2018 | 16 Feb 2021 |
| Utility: Coherent optical modem with method to discover and control an amplifier's automatic gain control (AGC) loop bandwidth Filling date: 6 Sep 2025 Issue date: 2 Feb 2021 | 8 Apr 2020 | 2 Feb 2021 |
| Utility: Optical modulator and optical modulator driver devices and methods utilizing independent arm bias to mitigate fabrication errors Filling date: 6 Sep 2025 Issue date: 2 Feb 2021 | 24 Aug 2018 | 2 Feb 2021 |
| Utility: Apparatus and methods for high frequency clock generation Filling date: 6 Sep 2025 Issue date: 26 Jan 2021 | 3 Apr 2020 | 26 Jan 2021 |
| Utility: Dimensional transformation in optical communication Filling date: 6 Sep 2025 Issue date: 26 Jan 2021 | 21 May 2019 | 26 Jan 2021 |
| Utility: Protection for a degree-to-degree fiber link in an optical add/drop multiplexer (OADM) Filling date: 6 Sep 2025 Issue date: 19 Jan 2021 | 27 Nov 2019 | 19 Jan 2021 |
| Utility: Optimizing messaging flows in a microservice architecture Filling date: 6 Sep 2025 Issue date: 12 Jan 2021 | 9 Aug 2019 | 12 Jan 2021 |
| Utility: Flexible grid optical spectrum transmitter, receiver, and transceiver Filling date: 6 Sep 2025 Issue date: 5 Jan 2021 | 15 Oct 2019 | 5 Jan 2021 |
| Utility: Thermal control system with sliding heatsink resistance control for pluggable optics in a hardened optical platform Filling date: 6 Sep 2025 Issue date: 29 Dec 2020 | 18 Oct 2019 | 29 Dec 2020 |
| Utility: Virtualized synchronous Ethernet interfaces Filling date: 6 Sep 2025 Issue date: 15 Dec 2020 | 30 Nov 2018 | 15 Dec 2020 |
| Utility: Optical power replacement for faulted spectrum in channel holder based optical links Filling date: 6 Sep 2025 Issue date: 15 Dec 2020 | 4 Sep 2018 | 15 Dec 2020 |
| Utility: Systems and methods to detect, locate, and switch based on signal degrade on multi-segment pseudowires Filling date: 6 Sep 2025 Issue date: 8 Dec 2020 | 30 Apr 2019 | 8 Dec 2020 |
| Utility: Detection of node isolation in subtended ethernet ring topologies Filling date: 6 Sep 2025 Issue date: 8 Dec 2020 | 10 Apr 2019 | 8 Dec 2020 |
| Utility: Adaptive systems and methods enhancing service quality of experience Filling date: 6 Sep 2025 Issue date: 8 Dec 2020 | 20 Mar 2019 | 8 Dec 2020 |
| Utility: Control and data plane synchronization during Make Before Break operations in Multiprotocol Label Switching Filling date: 6 Sep 2025 Issue date: 8 Dec 2020 | 2 Jan 2019 | 8 Dec 2020 |
| Utility: Network management systems and methods Filling date: 6 Sep 2025 Issue date: 8 Dec 2020 | 27 Nov 2018 | 8 Dec 2020 |
| Utility: Systems and methods for bandwidth management in software defined networking controlled multi-layer networks Filling date: 6 Sep 2025 Issue date: 8 Dec 2020 | 31 Oct 2017 | 8 Dec 2020 |
| Utility: Network-based IP configuration recovery Filling date: 6 Sep 2025 Issue date: 8 Dec 2020 | 20 Jul 2016 | 8 Dec 2020 |
| Utility: Frontplane communication network between multiple pluggable modules on a single faceplate Filling date: 6 Sep 2025 Issue date: 1 Dec 2020 | 9 Sep 2019 | 1 Dec 2020 |
| Utility: Monolithically integrated gain element Filling date: 6 Sep 2025 Issue date: 1 Dec 2020 | 28 May 2019 | 1 Dec 2020 |
| Utility: Pluggable optical module thermal management and heat shield assemblies, devices, and methods Filling date: 6 Sep 2025 Issue date: 1 Dec 2020 | 27 Feb 2019 | 1 Dec 2020 |
| Utility: Clock recovery circuits, systems and implementation for increased optical channel density Filling date: 6 Sep 2025 Issue date: 1 Dec 2020 | 7 Feb 2019 | 1 Dec 2020 |
| Utility: Apparatus and methods for digital fractional phase locked loop with a current mode low pass filter Filling date: 6 Sep 2025 Issue date: 24 Nov 2020 | 28 Feb 2020 | 24 Nov 2020 |
| Utility: Probabilistic constellation shaping of multi-dimensional symbols for improved tolerance to nonlinear impairments Filling date: 6 Sep 2025 Issue date: 24 Nov 2020 | 11 Oct 2019 | 24 Nov 2020 |
| Utility: Monitoring and auto-correction systems and methods for microservices Filling date: 6 Sep 2025 Issue date: 17 Nov 2020 | 24 Feb 2017 | 17 Nov 2020 |
| Utility: Reducing interference from channel holders in an optical link Filling date: 6 Sep 2025 Issue date: 10 Nov 2020 | 17 Jun 2019 | 10 Nov 2020 |
| Utility: Flat, highly connected optical network for data center switch connectivity Filling date: 6 Sep 2025 Issue date: 10 Nov 2020 | 4 Jan 2019 | 10 Nov 2020 |
| Utility: Systems and methods for service availability determination in packet networks Filling date: 6 Sep 2025 Issue date: 10 Nov 2020 | 29 Nov 2018 | 10 Nov 2020 |
| Utility: Photodetector circuit with improved saturation current and integrated optical filtering Filling date: 6 Sep 2025 Issue date: 10 Nov 2020 | 22 Jun 2018 | 10 Nov 2020 |
| Utility: Swapping bundles of optical channels in a C+L band system based on frequency band sensitivity Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 12 Feb 2020 | 3 Nov 2020 |
| Utility: Noise-shaping enhanced gated ring oscillator based analog-to-digital converters Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 15 Oct 2019 | 3 Nov 2020 |
| Utility: Pseudo frequency division multiplexing Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 2 Sep 2019 | 3 Nov 2020 |
| Utility: Partial survivability for multi-carrier and multi-module optical interfaces Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 7 May 2019 | 3 Nov 2020 |
| Utility: Threshold crossing events for network element instrumentation and telemetric streaming Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 17 Apr 2019 | 3 Nov 2020 |
| Utility: Optical switch with path continuity monitoring for optical protection switching Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 16 Jan 2019 | 3 Nov 2020 |
| Utility: Optical modulator robust to fabrication errors Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 12 Apr 2018 | 3 Nov 2020 |
| Utility: Fault localization using tandem connection monitors in optical transport network Filling date: 6 Sep 2025 Issue date: 3 Nov 2020 | 5 Oct 2016 | 3 Nov 2020 |
| Utility: Systems and methods for distributing unused bandwidth of metered flows in an envelope based on weights Filling date: 6 Sep 2025 Issue date: 27 Oct 2020 | 30 Nov 2018 | 27 Oct 2020 |
| Utility: Zero touch provisioning of a network element through a network address translation gateway Filling date: 6 Sep 2025 Issue date: 27 Oct 2020 | 2 May 2018 | 27 Oct 2020 |
| Utility: Hierarchical coherency for network function virtualization Filling date: 6 Sep 2025 Issue date: 27 Oct 2020 | 20 Mar 2018 | 27 Oct 2020 |
| Utility: Low or zero touch provisioning systems and methods of network elements over unnumbered interfaces Filling date: 6 Sep 2025 Issue date: 27 Oct 2020 | 4 Apr 2017 | 27 Oct 2020 |
| Utility: Methods and assemblies for using electrostriction to characterize properties of optical fiber Filling date: 6 Sep 2025 Issue date: 20 Oct 2020 | 27 Aug 2019 | 20 Oct 2020 |
| Utility: Flip-chip high speed components with underfill Filling date: 6 Sep 2025 Issue date: 20 Oct 2020 | 29 Aug 2017 | 20 Oct 2020 |
| Utility: Built-in jitter loading and state of polarization generation to characterize optical transceivers Filling date: 6 Sep 2025 Issue date: 13 Oct 2020 | 23 Apr 2019 | 13 Oct 2020 |
| Utility: Dynamic data-driven power scaling in an optical node and network Filling date: 6 Sep 2025 Issue date: 6 Oct 2020 | 15 Jul 2019 | 6 Oct 2020 |
