| Utility: Fiber management sliding tray system Filling date: 5 Sep 2025 Issue date: 31 Aug 2021 | 14 Nov 2019 | 31 Aug 2021 |
| Utility: Loss-based wavelength meter Filling date: 5 Sep 2025 Issue date: 26 Aug 2021 | 24 Feb 2021 | 26 Aug 2021 |
| Utility: Phase clock performance improvement for a system embedded with GNSS receiver Filling date: 5 Sep 2025 Issue date: 26 Aug 2021 | 26 Feb 2020 | 26 Aug 2021 |
| Utility: Resolving label depth and protection in Segment Routing Filling date: 5 Sep 2025 Issue date: 26 Aug 2021 | 21 Feb 2020 | 26 Aug 2021 |
| Utility: Distributed Precision Time Protocol Transparent Clock Filling date: 5 Sep 2025 Issue date: 26 Aug 2021 | 21 Feb 2020 | 26 Aug 2021 |
| Utility: Management interface handler to expedite module boot time in pluggable optical modules Filling date: 5 Sep 2025 Issue date: 24 Aug 2021 | 30 Jun 2020 | 24 Aug 2021 |
| Utility: Hybrid control and cooling module with independently removable cooling section for a network device Filling date: 5 Sep 2025 Issue date: 24 Aug 2021 | 17 Jun 2020 | 24 Aug 2021 |
| Utility: Low order regenerator with high order traffic conditioning in optical transport network Filling date: 5 Sep 2025 Issue date: 24 Aug 2021 | 17 Jun 2020 | 24 Aug 2021 |
| Utility: Localizing anomalies of a fiber optic network within the context of a geographic map Filling date: 5 Sep 2025 Issue date: 24 Aug 2021 | 24 Mar 2020 | 24 Aug 2021 |
| Utility: Switching a service path over to an alternative service path Filling date: 5 Sep 2025 Issue date: 24 Aug 2021 | 13 Feb 2020 | 24 Aug 2021 |
| Utility: Method and system for balancing optical receiver Filling date: 5 Sep 2025 Issue date: 24 Aug 2021 | 5 Feb 2019 | 24 Aug 2021 |
| Utility: Switching a service path over to an alternative service path Filling date: 5 Sep 2025 Issue date: 19 Aug 2021 | 13 Feb 2020 | 19 Aug 2021 |
| Utility: Legacy time division multiplexing (TDM) service support in a packet network and on a packet network element Filling date: 5 Sep 2025 Issue date: 17 Aug 2021 | 9 Sep 2019 | 17 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: 5 Sep 2025 Issue date: 12 Aug 2021 | 23 Mar 2020 | 12 Aug 2021 |
| Utility: Identifying Border Gateway Protocol (BGP) anomalies at scale Filling date: 5 Sep 2025 Issue date: 12 Aug 2021 | 12 Feb 2020 | 12 Aug 2021 |
| Utility: Self-compressed YANG model Filling date: 5 Sep 2025 Issue date: 10 Aug 2021 | 14 Nov 2019 | 10 Aug 2021 |
| Utility: DiffServ traffic engineering compliant backup paths for fast reroute protection in MPLS Filling date: 5 Sep 2025 Issue date: 10 Aug 2021 | 11 Jan 2019 | 10 Aug 2021 |
| Utility: Hardened optical platform with pluggable optics Filling date: 5 Sep 2025 Issue date: 5 Aug 2021 | 19 Apr 2021 | 5 Aug 2021 |
| Utility: Modular networking hardware platform Filling date: 5 Sep 2025 Issue date: 5 Aug 2021 | 31 Jan 2020 | 5 Aug 2021 |
| Utility: Constraint-based event-driven telemetry Filling date: 5 Sep 2025 Issue date: 5 Aug 2021 | 30 Jan 2020 | 5 Aug 2021 |
| Utility: FlexE frame format using 256b/257b block encoding Filling date: 5 Sep 2025 Issue date: 3 Aug 2021 | 10 May 2019 | 3 Aug 2021 |
| Utility: Universal sub slot architecture for networking modules Filling date: 5 Sep 2025 Issue date: 3 Aug 2021 | 23 Apr 2019 | 3 Aug 2021 |
| Utility: EVPN VPWS FXC local switching connectivity Filling date: 5 Sep 2025 Issue date: 22 Jul 2021 | 22 Jan 2020 | 22 Jul 2021 |
| Utility: System-level optical amplifier efficiency performance metric Filling date: 5 Sep 2025 Issue date: 22 Jul 2021 | 17 Jan 2020 | 22 Jul 2021 |
| Utility: Opportunistic network defragmentation and optimization Filling date: 5 Sep 2025 Issue date: 20 Jul 2021 | 7 May 2020 | 20 Jul 2021 |
| Utility: High performance and scalable multi-layer topology discovery systems and methods Filling date: 5 Sep 2025 Issue date: 15 Jul 2021 | 26 Feb 2020 | 15 Jul 2021 |
| Utility: Scalable ROADM architecture with multi-plane switching Filling date: 5 Sep 2025 Issue date: 13 Jul 2021 | 12 Jun 2020 | 13 Jul 2021 |
| Utility: Double-Blind Mating Pluggable-Modules Holder Filling date: 5 Sep 2025 Issue date: 8 Jul 2021 | 6 Jan 2020 | 8 Jul 2021 |
| Utility: Digital-to-Analog Converter and Generation of High-Bandwidth Analog Signals Filling date: 5 Sep 2025 Issue date: 8 Jul 2021 | 23 May 2019 | 8 Jul 2021 |
| Utility: Optical fiber characterization measurement systems and methods Filling date: 5 Sep 2025 Issue date: 8 Jul 2021 | 15 May 2019 | 8 Jul 2021 |
| Utility: Discovery of port-to-port connectivity across network layers using machine learning Filling date: 5 Sep 2025 Issue date: 6 Jul 2021 | 8 Jun 2020 | 6 Jul 2021 |
| Utility: Spectrum assignments for application throughout an optical network element in a flexible-channel configuration Filling date: 5 Sep 2025 Issue date: 6 Jul 2021 | 14 Nov 2019 | 6 Jul 2021 |
| Utility: Virtualized sections for sectional control of optical links Filling date: 5 Sep 2025 Issue date: 6 Jul 2021 | 24 Oct 2019 | 6 Jul 2021 |
| Utility: Virtual programming in a microservice architecture Filling date: 5 Sep 2025 Issue date: 6 Jul 2021 | 9 Aug 2019 | 6 Jul 2021 |
| Utility: Selecting where to process data associated with Internet of Things (IoT) devices Filling date: 5 Sep 2025 Issue date: 6 Jul 2021 | 1 May 2019 | 6 Jul 2021 |
| Utility: Systems and methods for automated feature selection and pattern discovery of multi-variate time-series Filling date: 5 Sep 2025 Issue date: 29 Jun 2021 | 10 Sep 2018 | 29 Jun 2021 |
| Utility: FlexO/ZR subrating and partial survivability Filling date: 5 Sep 2025 Issue date: 24 Jun 2021 | 10 Mar 2021 | 24 Jun 2021 |
| Utility: OTN adaptation for support of subrate granularity and flexibility and for distribution across multiple modem engines Filling date: 5 Sep 2025 Issue date: 15 Jun 2021 | 3 Dec 2019 | 15 Jun 2021 |
| Utility: Adaptive learning system utilizing reinforcement learning to tune hyperparameters in machine learning techniques Filling date: 5 Sep 2025 Issue date: 10 Jun 2021 | 9 Dec 2019 | 10 Jun 2021 |
| Utility: Systems and methods for increasing granularity and fan-out of electric circuits with co-packaged optical interfaces Filling date: 5 Sep 2025 Issue date: 10 Jun 2021 | 5 Dec 2019 | 10 Jun 2021 |
| Utility: Flexible Ethernet Operations, Administration, and Maintenance systems and methods Filling date: 5 Sep 2025 Issue date: 3 Jun 2021 | 17 Feb 2021 | 3 Jun 2021 |
| Utility: Managing Stray Light Absorption in Integrated Photonics Devices Filling date: 5 Sep 2025 Issue date: 3 Jun 2021 | 14 Jan 2020 | 3 Jun 2021 |
| Utility: Systems and methods for increasing granularity and fan-out of electric circuits with co-packaged optical interfaces Filling date: 5 Sep 2025 Issue date: 1 Jun 2021 | 5 Dec 2019 | 1 Jun 2021 |
| Utility: Silicon photonics modulator using TM mode and with a modified rib geometry Filling date: 5 Sep 2025 Issue date: 1 Jun 2021 | 29 Aug 2019 | 1 Jun 2021 |
| Utility: Shared risk representation in networks for troubleshooting, assignment, and propagation across layers Filling date: 5 Sep 2025 Issue date: 27 May 2021 | 8 Jan 2020 | 27 May 2021 |
| Utility: Reducing resource requirements for high-frequency counter arrays Filling date: 5 Sep 2025 Issue date: 25 May 2021 | 17 Nov 2020 | 25 May 2021 |
| Utility: Forecasting time-series data in a network environment Filling date: 5 Sep 2025 Issue date: 20 May 2021 | 19 Nov 2019 | 20 May 2021 |
| Utility: Fiber Management Sliding Tray System Filling date: 5 Sep 2025 Issue date: 20 May 2021 | 14 Nov 2019 | 20 May 2021 |
| Utility: Spectrum assignments for application throughout an optical network element in a flexible-channel configuration Filling date: 5 Sep 2025 Issue date: 20 May 2021 | 14 Nov 2019 | 20 May 2021 |
| Utility: Self-compressed YANG model Filling date: 5 Sep 2025 Issue date: 20 May 2021 | 14 Nov 2019 | 20 May 2021 |
