665 patents currently held
13 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
16 more records may belong here and await a decision; they are not counted.
The next term ends in Nov 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
144
Ending by 2030
Nov 2026
Next term end
521
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Feb 2030 · High confidence
Also notable
Ends Oct 2027 · High confidence
Also notable
Ends Jun 2027 · High confidence
Compact Multi-Zone Infrared Laser Illuminator
US 10,244,181
Cited by 138 later US patents, top 1% of utility patents granted in 2019 in our data. Protection runs to 2030.
Systems and Methods for the Integration of Framing, Oam&p, and Forward Error Correction in Pluggable Optical Transceiver Devices
US 7,580,637
Cited by 68 later US patents, top 25% of utility patents granted in 2009 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
Beam Steering Element and Associated Methods for Manifold Fiberoptic Switches and Monitoring
US 8,131,123
Cited by 51 later US patents, top 25% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027. A terminal disclaimer caps this term to an earlier patent's.
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 7 fees due Nov 16 to 30, 2026 · next Nov 16
- 14 fees due Dec 2 to 30, 2026 · next Dec 2
- 8 fees due Jan 2 to 11, 2027 · next Jan 2
- 9 fees due Feb 6 to 28, 2027 · next Feb 6
- 8 fees due Mar 1 to 22, 2027 · next Mar 1
- 9 fees due Apr 1 to 30, 2027 · next Apr 1
- 10 fees due May 3 to 28, 2027 · next May 3
- 7 fees due Jun 8 to 26, 2027 · next Jun 8
- 13 fees due Jul 2 to 30, 2027 · next Jul 2
- 13 fees due Aug 2 to 27, 2027 · next Aug 2
- 9 fees due Sep 5 to 30, 2027 · next Sep 5
- 11 fees due Oct 2 to 28, 2027 · next Oct 2
- 3 fees due Nov 3 to 14, 2027 · next Nov 3
Recent changes
- 11 of the patents on this record were granted since Aug 17, 2026
- 17 terms have ended since Aug 17, 2026
What they patent
The 5 largest of its 521 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Multibeam Arrays of Optoelectronic Devices for High Frequency Operation | 16 in force | to Mar 2034 |
| Segmented Prism Element and Associated Methods for Manifold Fiberoptic Switches | 6 in force | to May 2029 |
| Systems and Methods for the Integration of Framing, Oam&p, and Forward Error Correction in Pluggable Optical Transceiver Devices | 6 in force | to Jan 2029 |
| Rotary Optical Beam Generator | 5 in force | to Jun 2038 |
| Zoned Optical Waveplate | 4 in force | to Jul 2035 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,433,606 | Photodiode Bias Controller for Optical Receiver In force · High confidence | In force | High confidence | |
| US 7,843,978 | Passively Q-Switched Laser with Adjustable Pulse Repetition Rate In force · High confidence | In force | High confidence | |
| US 7,593,610 | Multi-Mode Optical Coherence Device and Fabrication Method Thereof In force · High confidence | In force | High confidence | |
| US 7,522,848 | Receiver with Dynamically Adjustable Decision Threshold Voltage Based on Input Power In force · High confidence | In force | High confidence | |
| US 7,468,996 | External Cavity Laser Tuning Element Dither Servo Control In force · High confidence | In force | High confidence | |
| US 7,453,306 | Pulse Shaping Circuit In force · High confidence | In force | High confidence | |
| US 7,522,784 | Asymmetric Directional Coupler Having a Reduced Drive Voltage In force · High confidence | In force | High confidence | |
| US 7,606,447 | Mach-Zehnder Type Semiconductor Device and Method of Controlling the Same In force · High confidence | In force | High confidence | |
| US 8,929,744 | 40G/100G Msa-Compliant Optical Transceivers with Advanced Functionality In force · High confidence | In force | High confidence | |
| US 7,352,928 | Tunable Optical Add/Drop Multiplexer In force · High confidence | In force | High confidence |
Also on record, not counted in the 665: 13 patents in force now held by others · 386 patents ended · 164 applications pending · 67 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.