Ciena Corporation
1,928Patents
1,483Active
1,928Granted
63Portfolio score
Filing activity: Jun 4, 1993 → Jun 17, 2024 · 259 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7240364B1 | Network device identity authentication | Electricity | 492 | Expired |
| US7143153B1 | Internal network device dynamic health monitoring | Electricity | 404 | Expired |
| US8456984B2 | Virtualized shared protection capacity | Electricity | 318 | Active |
| US7222147B1 | Processing network management data in accordance with metadata files | Electricity | 310 | Expired |
| US6880086B2 | Signatures for facilitating hot upgrades of modular software components | Electricity | 305 | Expired |
| US6233080A | Crosstalk-free signal source for dense wavelength division multiplexed systems | Electricity | 302 | Expired |
| US7020696B1 | Distributed user management information in telecommunications networks | Electricity | 291 | Expired |
| US7225244B2 | Common command interface | Emerging Cross-Sectional Technologies | 201 | Expired |
| US6934749B1 | Tracking distributed data retrieval in a network device | Electricity | 197 | Expired |
| US7266595B1 | Accessing network device data through user profiles | Electricity | 197 | Expired |
| US6980783B2 | Apparatus and method of controlling low frequency load currents drawn from a DC source in a telecommunications system | Electricity | 180 | Expired |
| US5778132A | Modular optical amplifier and cassette system | Physics | 172 | Expired |
| US7349960B1 | Throttling distributed statistical data retrieval in a network device | Electricity | 160 | Expired |
| US6594434B1 | Fiber optic cables management and measurement apparatus | Physics | 157 | Expired |
| US6049413A | Optical amplifier having first and second stages and an attenuator controlled based on the gains of the first and second stages | Electricity | 145 | Expired |
| US7062642B1 | Policy based provisioning of network device resources | Electricity | 139 | Expired |
| US6816461B1 | Method of controlling a network element to aggregate alarms and faults of a communications network | Electricity | 136 | Expired |
| US5742416A | Bidirectional WDM optical communication systems with bidirectional optical amplifiers | Electricity | 136 | Expired |
| US9819565B2 | Dynamic policy engine for multi-layer network management | Electricity | 131 | Active |
| US5778118A | Optical add-drop multiplexers for WDM optical communication systems | Electricity | 128 | Expired |
| US5579143A | Optical system with tunable in-fiber gratings | Electricity | 119 | Expired |
| US5504609A | WDM optical communication system with remodulators | Electricity | 117 | Expired |
| US5712932A | Dynamically reconfigurable WDM optical communication systems with optical routing systems | Electricity | 110 | Expired |
| US5726784A | WDM optical communication system with remodulators and diverse optical transmitters | Electricity | 109 | Expired |
| US5673129A | WDM optical communication systems with wavelength stabilized optical selectors | Electricity | 108 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.