AT&T Intellectual Property I, L.P.
16,417Patents
15,897Active
16,417Granted
65Portfolio score
Filing activity: Oct 2, 1997 → Jul 5, 2024 · 4,493 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8897697B1 | Millimeter-wave surface-wave communications | Electricity | 708 | Active |
| US8344829B2 | Technique for conveying a wireless-standard signal through a barrier | Electricity | 665 | Active |
| US8212635B2 | Surface wave coupler | Electricity | 661 | Active |
| US8253516B2 | Using an electric power cable as the vehicle for communicating an information-bearing signal through a barrier | Electricity | 655 | Active |
| US8269583B2 | Using surface wave propagation to communicate an information-bearing signal through a barrier | Electricity | 655 | Active |
| US9113347B2 | Backhaul link for distributed antenna system | Emerging Cross-Sectional Technologies | 604 | Active |
| US9209902B2 | Quasi-optical coupler | Electricity | 578 | Active |
| US9860075B1 | Method and communication node for broadband distribution | Electricity | 577 | Active |
| US9461706B1 | Method and apparatus for exchanging communication signals | Electricity | 558 | Active |
| US9893795B1 | Method and repeater for broadband distribution | Electricity | 535 | Active |
| US9490869B1 | Transmission medium having multiple cores and methods for use therewith | Electricity | 526 | Active |
| US9509415B1 | Methods and apparatus for inducing a fundamental wave mode on a transmission medium | Electricity | 514 | Active |
| US9312919B1 | Transmission device with impairment compensation and methods for use therewith | Electricity | 499 | Active |
| US9544006B2 | Transmission device with mode division multiplexing and methods for use therewith | Electricity | 487 | Active |
| US9525524B2 | Remote distributed antenna system | Electricity | 480 | Active |
| US9768833B2 | Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves | Electricity | 478 | Active |
| US9866309B2 | Host node device and methods for use therewith | Electricity | 478 | Active |
| US9853342B2 | Dielectric transmission medium connector and methods for use therewith | Electricity | 478 | Active |
| US9705571B2 | Method and apparatus for use with a radio distributed antenna system | Electricity | 476 | Active |
| US9608740B2 | Method and apparatus for launching a wave mode that mitigates interference | Electricity | 475 | Active |
| US9793951B2 | Method and apparatus for launching a wave mode that mitigates interference | Electricity | 475 | Active |
| US9680670B2 | Transmission device with channel equalization and control and methods for use therewith | Electricity | 474 | Active |
| US9793954B2 | Magnetic coupling device and methods for use therewith | Emerging Cross-Sectional Technologies | 474 | Active |
| US9769020B2 | Method and apparatus for responding to events affecting communications in a communication network | Electricity | 473 | Active |
| US9882257B2 | Method and apparatus for launching a wave mode that mitigates interference | Electricity | 472 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.