| Utility: Silicon-based Modulator with Optimized Longitudinal Doping Profiles Filling date: 6 Sep 2025 Issue date: 18 Jun 2020 | 25 Jan 2019 | 18 Jun 2020 |
| Utility: DiffServ Traffic Engineering compliant backup paths for Fast Reroute protection in MPLS Filling date: 6 Sep 2025 Issue date: 4 Jun 2020 | 11 Jan 2019 | 4 Jun 2020 |
| Utility: Virtualized Synchronous Ethernet interfaces Filling date: 6 Sep 2025 Issue date: 4 Jun 2020 | 30 Nov 2018 | 4 Jun 2020 |
| Utility: Fractional frequency synthesis by sigma-delta modulating frequency of a reference clock Filling date: 6 Sep 2025 Issue date: 4 Jun 2020 | 30 Nov 2018 | 4 Jun 2020 |
| 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: 28 May 2020 | 28 Nov 2018 | 28 May 2020 |
| Utility: Non-hermetic Semiconductor Optical Amplifier integration on Silicon photonics Filling date: 6 Sep 2025 Issue date: 28 May 2020 | 28 Nov 2018 | 28 May 2020 |
| Utility: Integrated optical device with manufactured waveguide aperture to block stray light and associated manufacture method Filling date: 6 Sep 2025 Issue date: 28 May 2020 | 27 Nov 2018 | 28 May 2020 |
| Utility: Method and system of mitigating network attacks Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 22 Jan 2020 | 21 May 2020 |
| Utility: Traffic Engineering attribute for avoiding packet paths with signal degrade Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 3 Jan 2019 | 21 May 2020 |
| Utility: Control and data plane synchronization during Make Before Break operations in Multiprotocol Label Switching Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 2 Jan 2019 | 21 May 2020 |
| Utility: Physical-Layer Security for Coherent Communications System Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 21 Nov 2018 | 21 May 2020 |
| Utility: Traffic Engineering for Border Gateway Protocol Filling date: 6 Sep 2025 Issue date: 21 May 2020 | 19 Nov 2018 | 21 May 2020 |
| Utility: Power management for network device line modules Filling date: 6 Sep 2025 Issue date: 14 May 2020 | 9 Dec 2019 | 14 May 2020 |
| Utility: Dynamic reservation protocol for 5G network slicing Filling date: 6 Sep 2025 Issue date: 7 May 2020 | 27 Dec 2019 | 7 May 2020 |
| Utility: Forward Error Correction with Outer Multi-Level Code and Inner Contrast Code Filling date: 6 Sep 2025 Issue date: 7 May 2020 | 30 Jul 2018 | 7 May 2020 |
| Utility: Silicon-based modulator with different transition zone thicknesses Filling date: 6 Sep 2025 Issue date: 23 Apr 2020 | 29 Oct 2019 | 23 Apr 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: 23 Apr 2020 | 30 Nov 2018 | 23 Apr 2020 |
| Utility: Systems and methods for service availability determination in packet networks Filling date: 6 Sep 2025 Issue date: 23 Apr 2020 | 29 Nov 2018 | 23 Apr 2020 |
| Utility: Probabilistic Constellation Shaping of Multi-Dimensional Symbols for Improved Tolerance to Nonlinear Impairments Filling date: 6 Sep 2025 Issue date: 16 Apr 2020 | 11 Oct 2019 | 16 Apr 2020 |
| Utility: OPTIMIZED COLORLESS, DIRECTIONLESS, AND CONTENTIONLESS ROADM IN A MODULE Filling date: 6 Sep 2025 Issue date: 16 Apr 2020 | 16 Oct 2018 | 16 Apr 2020 |
| Utility: Scalable task scheduling systems and methods for cyclic interdependent tasks using semantic analysis Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 8 Nov 2018 | 26 Mar 2020 |
| Utility: Compliant micro latch for high-speed signal sub-slot pluggable modules Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 25 Sep 2018 | 26 Mar 2020 |
| Utility: Hardened optical platform with pluggable optics Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 20 Sep 2018 | 26 Mar 2020 |
| Utility: Systems and methods for automated Maintenance End Point creation Filling date: 6 Sep 2025 Issue date: 26 Mar 2020 | 20 Sep 2018 | 26 Mar 2020 |
| 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: 19 Mar 2020 | 9 Sep 2019 | 19 Mar 2020 |
| Utility: Systems and methods for capturing packet loss and disruption duration information during service restoration Filling date: 6 Sep 2025 Issue date: 19 Mar 2020 | 1 Nov 2018 | 19 Mar 2020 |
| Utility: Systems and methods for automated feature selection and pattern discovery of multi-variate time-series Filling date: 6 Sep 2025 Issue date: 12 Mar 2020 | 10 Sep 2018 | 12 Mar 2020 |
| Utility: Fully differential traveling wave series push-pull Mach-Zehnder Modulator Filling date: 6 Sep 2025 Issue date: 12 Mar 2020 | 10 Sep 2018 | 12 Mar 2020 |
| Utility: Silicon photonics modulator using TM mode and with a modified rib geometry Filling date: 6 Sep 2025 Issue date: 5 Mar 2020 | 29 Aug 2019 | 5 Mar 2020 |
| Utility: Data path retention during control plane failures in a Multiprotocol Label Switching network Filling date: 6 Sep 2025 Issue date: 5 Mar 2020 | 15 Oct 2018 | 5 Mar 2020 |
| Utility: Optical power replacement for faulted spectrum in channel holder based optical links Filling date: 6 Sep 2025 Issue date: 5 Mar 2020 | 4 Sep 2018 | 5 Mar 2020 |
| Utility: Network architecture providing device identification and redirection using whitelisting traffic classification Filling date: 6 Sep 2025 Issue date: 27 Feb 2020 | 26 Jul 2019 | 27 Feb 2020 |
| 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: 27 Feb 2020 | 24 Aug 2018 | 27 Feb 2020 |
| Utility: Data network and execution environment replication for network automation and network applications Filling date: 6 Sep 2025 Issue date: 27 Feb 2020 | 21 Aug 2018 | 27 Feb 2020 |
| Utility: Virtualized sections for sectional control of optical links Filling date: 6 Sep 2025 Issue date: 20 Feb 2020 | 24 Oct 2019 | 20 Feb 2020 |
| Utility: Optical modulator robust to fabrication errors Filling date: 6 Sep 2025 Issue date: 20 Feb 2020 | 12 Apr 2018 | 20 Feb 2020 |
| Utility: Coordinated and scheduled standards-based intervals in network elements Filling date: 6 Sep 2025 Issue date: 13 Feb 2020 | 16 Oct 2019 | 13 Feb 2020 |
| Utility: Flexible grid optical spectrum transmitter, receiver, and transceiver Filling date: 6 Sep 2025 Issue date: 6 Feb 2020 | 15 Oct 2019 | 6 Feb 2020 |
| Utility: Zero touch provisioning script to provision network elements over unnumbered interfaces Filling date: 6 Sep 2025 Issue date: 6 Feb 2020 | 31 Jul 2018 | 6 Feb 2020 |
| Utility: Variable Spectral Efficiency Optical Modulation Schemes Filling date: 6 Sep 2025 Issue date: 30 Jan 2020 | 8 Oct 2019 | 30 Jan 2020 |
| Utility: Service synchronization in Retain Home Path scenarios in a control plane network Filling date: 6 Sep 2025 Issue date: 30 Jan 2020 | 10 Sep 2018 | 30 Jan 2020 |
| Utility: Systems and methods for sideline processing in a Virtual Network Function Filling date: 6 Sep 2025 Issue date: 30 Jan 2020 | 30 Jul 2018 | 30 Jan 2020 |
| Utility: Scaling operations, administration, and maintenance sessions in packet networks Filling date: 6 Sep 2025 Issue date: 23 Jan 2020 | 30 Sep 2019 | 23 Jan 2020 |
| Utility: Spread weave induced skew minimization Filling date: 6 Sep 2025 Issue date: 23 Jan 2020 | 2 Aug 2019 | 23 Jan 2020 |
| Utility: Systems and methods for compensating coherent optics delay asymmetry in a packet optical network Filling date: 6 Sep 2025 Issue date: 23 Jan 2020 | 23 Jul 2018 | 23 Jan 2020 |
| Utility: Systems and methods to signal Auto Facility Bypass Tunnel Generation Indication and Backup Reselection Request for Fast Reroute capable downstream routers in MPLS Filling date: 6 Sep 2025 Issue date: 9 Jan 2020 | 21 Aug 2018 | 9 Jan 2020 |
| Utility: METHOD TO DISCOVER AND CONTROL AN AMPLIFIER'S AUTOMATIC GAIN CONTROL (AGC) LOOP BANDWIDTH Filling date: 6 Sep 2025 Issue date: 9 Jan 2020 | 5 Jul 2018 | 9 Jan 2020 |
| Utility: Management of flexible grid and supercarriers in optical networks using a data model Filling date: 6 Sep 2025 Issue date: 2 Jan 2020 | 12 Sep 2019 | 2 Jan 2020 |
| Utility: Upgradeable colorless, directionless, and contentionless optical architectures Filling date: 6 Sep 2025 Issue date: 2 Jan 2020 | 11 Sep 2019 | 2 Jan 2020 |
| Utility: Frontplane communication network between multiple pluggable modules on a single faceplate Filling date: 6 Sep 2025 Issue date: 2 Jan 2020 | 9 Sep 2019 | 2 Jan 2020 |
