| Utility: Fiber management sliding tray system Filling date: 6 Sep 2025 Issue date: 31 Aug 2021 | 14 Nov 2019 | 31 Aug 2021 |
| Utility: Management interface handler to expedite module boot time in pluggable optical modules Filling date: 6 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: 6 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: 6 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: 6 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: 6 Sep 2025 Issue date: 24 Aug 2021 | 13 Feb 2020 | 24 Aug 2021 |
| Utility: Method and system for balancing optical receiver Filling date: 6 Sep 2025 Issue date: 24 Aug 2021 | 5 Feb 2019 | 24 Aug 2021 |
| Utility: Legacy time division multiplexing (TDM) service support in a packet network and on a packet network element Filling date: 6 Sep 2025 Issue date: 17 Aug 2021 | 9 Sep 2019 | 17 Aug 2021 |
| Utility: Self-compressed YANG model Filling date: 6 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: 6 Sep 2025 Issue date: 10 Aug 2021 | 11 Jan 2019 | 10 Aug 2021 |
| Utility: FlexE frame format using 256b/257b block encoding Filling date: 6 Sep 2025 Issue date: 3 Aug 2021 | 10 May 2019 | 3 Aug 2021 |
| Utility: Universal sub slot architecture for networking modules Filling date: 6 Sep 2025 Issue date: 3 Aug 2021 | 23 Apr 2019 | 3 Aug 2021 |
| Utility: Opportunistic network defragmentation and optimization Filling date: 6 Sep 2025 Issue date: 20 Jul 2021 | 7 May 2020 | 20 Jul 2021 |
| Utility: Scalable ROADM architecture with multi-plane switching Filling date: 6 Sep 2025 Issue date: 13 Jul 2021 | 12 Jun 2020 | 13 Jul 2021 |
| Utility: Discovery of port-to-port connectivity across network layers using machine learning Filling date: 6 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: 6 Sep 2025 Issue date: 6 Jul 2021 | 14 Nov 2019 | 6 Jul 2021 |
| Utility: Virtualized sections for sectional control of optical links Filling date: 6 Sep 2025 Issue date: 6 Jul 2021 | 24 Oct 2019 | 6 Jul 2021 |
| Utility: Virtual programming in a microservice architecture Filling date: 6 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: 6 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: 6 Sep 2025 Issue date: 29 Jun 2021 | 10 Sep 2018 | 29 Jun 2021 |
| Utility: OTN adaptation for support of subrate granularity and flexibility and for distribution across multiple modem engines Filling date: 6 Sep 2025 Issue date: 15 Jun 2021 | 3 Dec 2019 | 15 Jun 2021 |
| Utility: Systems and methods for increasing granularity and fan-out of electric circuits with co-packaged optical interfaces Filling date: 6 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: 6 Sep 2025 Issue date: 1 Jun 2021 | 29 Aug 2019 | 1 Jun 2021 |
| Utility: Reducing resource requirements for high-frequency counter arrays Filling date: 6 Sep 2025 Issue date: 25 May 2021 | 17 Nov 2020 | 25 May 2021 |
| Utility: Apparatus and methods for digital phase locked loop with analog proportional control function Filling date: 6 Sep 2025 Issue date: 18 May 2021 | 13 Jul 2020 | 18 May 2021 |
| Utility: Asymmetric heat pipe coupled to a heat sink Filling date: 6 Sep 2025 Issue date: 18 May 2021 | 27 Feb 2018 | 18 May 2021 |
| Utility: Automatic remote node turn-up procedure using a raman amplifier on a stretched fiber span Filling date: 6 Sep 2025 Issue date: 27 Apr 2021 | 24 May 2020 | 27 Apr 2021 |
| Utility: Traffic engineering attribute for avoiding packet paths with signal degrade Filling date: 6 Sep 2025 Issue date: 27 Apr 2021 | 3 Jan 2019 | 27 Apr 2021 |
| Utility: Handling compensation for losses in optical fiber links Filling date: 6 Sep 2025 Issue date: 20 Apr 2021 | 13 Aug 2020 | 20 Apr 2021 |
| Utility: Estimating clock phase error based on channel conditions Filling date: 6 Sep 2025 Issue date: 20 Apr 2021 | 3 Mar 2020 | 20 Apr 2021 |
| Utility: Silicon-based modulator with different transition zone thicknesses Filling date: 6 Sep 2025 Issue date: 20 Apr 2021 | 29 Oct 2019 | 20 Apr 2021 |
| Utility: Generic non-client specific protection via TCM status and enhanced OTN network propagation of client faults Filling date: 6 Sep 2025 Issue date: 20 Apr 2021 | 17 Jun 2019 | 20 Apr 2021 |
| Utility: Weighted random early detection improvements to absorb microbursts Filling date: 6 Sep 2025 Issue date: 20 Apr 2021 | 10 Apr 2019 | 20 Apr 2021 |
| Utility: Hardened optical platform with pluggable optics Filling date: 6 Sep 2025 Issue date: 20 Apr 2021 | 20 Sep 2018 | 20 Apr 2021 |
| Utility: Successive approximation register analog to digital converter based phase-locked loop with programmable range Filling date: 6 Sep 2025 Issue date: 13 Apr 2021 | 26 Oct 2020 | 13 Apr 2021 |
| Utility: Optical protection devices having passive splitter/couplers and built-in interrupters Filling date: 6 Sep 2025 Issue date: 13 Apr 2021 | 31 Mar 2020 | 13 Apr 2021 |
| Utility: Spread weave induced skew minimization Filling date: 6 Sep 2025 Issue date: 6 Apr 2021 | 2 Aug 2019 | 6 Apr 2021 |
| Utility: Pre-populating media access control (MAC) address tables in networks where flooding of MAC addresses is blocked Filling date: 6 Sep 2025 Issue date: 6 Apr 2021 | 28 Nov 2018 | 6 Apr 2021 |
| Utility: Data structures representing models of networking equipment and methods of network management employing thereof Filling date: 6 Sep 2025 Issue date: 6 Apr 2021 | 11 May 2018 | 6 Apr 2021 |
| Utility: High bandwidth under-sampled successive approximation register analog to digital converter with nonlinearity minimization Filling date: 6 Sep 2025 Issue date: 30 Mar 2021 | 12 Jun 2020 | 30 Mar 2021 |
| Utility: Handling band spectrum failures in a C+L band photonic line system Filling date: 6 Sep 2025 Issue date: 30 Mar 2021 | 6 Jan 2020 | 30 Mar 2021 |
| Utility: Registering collaborative configuration changes of a network element in a blockchain ledger Filling date: 6 Sep 2025 Issue date: 30 Mar 2021 | 8 Mar 2019 | 30 Mar 2021 |
| Utility: Scalable OSPF configuration for managing optical networks Filling date: 6 Sep 2025 Issue date: 23 Mar 2021 | 12 Jun 2020 | 23 Mar 2021 |
| Utility: Management of flexible grid and supercarriers in optical networks using a data model Filling date: 6 Sep 2025 Issue date: 23 Mar 2021 | 12 Sep 2019 | 23 Mar 2021 |
| Utility: Managing mode transfer in asymmetric waveguide coupling structures Filling date: 6 Sep 2025 Issue date: 23 Mar 2021 | 15 Jul 2019 | 23 Mar 2021 |
| Utility: Short-term optical recovery systems and methods for coherent optical receivers Filling date: 6 Sep 2025 Issue date: 23 Mar 2021 | 3 Aug 2015 | 23 Mar 2021 |
| Utility: End-to-end data path integrity validation at layer 2 Filling date: 6 Sep 2025 Issue date: 16 Mar 2021 | 9 Jan 2018 | 16 Mar 2021 |
| Utility: Optimized virtual network function service chaining with hardware acceleration Filling date: 6 Sep 2025 Issue date: 16 Mar 2021 | 22 Jun 2016 | 16 Mar 2021 |
| Utility: Apparatus and methods for characterization of high frequency and high data rate signals Filling date: 6 Sep 2025 Issue date: 2 Mar 2021 | 18 Mar 2020 | 2 Mar 2021 |
| Utility: Pluggable optical module thermal management and heat shield assemblies, devices, and methods Filling date: 6 Sep 2025 Issue date: 2 Mar 2021 | 15 Oct 2019 | 2 Mar 2021 |
