35 patents currently held
38 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.
15 more records may belong here and await a decision; they are not counted.
The next term ends in Jan 2027. from the record
Of the 38 now held by other companies, 27 name Seeqc Inc. as their current owner, and 11 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
25
Ending by 2030
Jan 2027
Next term end
12
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 14, 2026 · includes USPTO assignment & status data published Nov 14, 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 May 2030 · High confidence
Also notable
Ends Aug 2029 · High confidence
Also notable
Ends Apr 2030 · High confidence
Wideband Digital Spectrometer
US 8,045,660
The most cited patent in this portfolio, cited by 240 later US patents, top 5% of utility patents granted in 2011 in our data. Protection runs to 2030.
Two Stage Radio Frequency Interference Cancellation System and Method
US 9,312,895
Cited by 80 later US patents, top 5% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2029. A terminal disclaimer caps this term to an earlier patent's.
System and Method for Digital Interference Cancellation
US 8,055,235
Cited by 111 later US patents, top 10% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
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.
- 1 fee due Jan 9, 2027The maintenance fee for System and Method for Digital Interference Cancellation (US 10,348,343) comes due Jan 9, 2027. Unpaid by Jul 9, 2027, it lapses early.
- 1 fee due Feb 13, 2027The maintenance fee for Digital Radio Frequency Transceiver System and Method (US 10,382,132) comes due Feb 13, 2027. Unpaid by Aug 13, 2027, it lapses early.
- 1 fee due Apr 29, 2027The maintenance fee for System and Method for Cryogenic Hybrid Technology Computing and Memory (US 10,460,796) comes due Apr 29, 2027. Unpaid by Oct 29, 2027, it lapses early.
- 1 fee due Jun 10, 2027The maintenance fee for System and Method for Array Diagnostics in Superconducting Integrated Circuit (US 10,505,097) comes due Jun 10, 2027. Unpaid by Dec 10, 2027, it lapses early.
- 1 fee due Sep 1, 2027The maintenance fee for Superconducting Multi-Bit Digital Mixer (US 9,276,615) comes due Sep 1, 2027. Unpaid by Mar 1, 2028, it lapses early.
- 3 fees due Oct 12 to 21, 2027 · next Oct 12
Recent changes
- 2 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 12 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Two Stage Radio Frequency Interference Cancellation System and Method | 6 in force | to Mar 2031 |
| System and Method for Digital Interference Cancellation | 6 in force | to May 2030 |
| Wideband Digital Spectrometer | 5 in force | to Oct 2030 |
| Superconducting Multi-Bit Digital Mixer | 4 in force | to Jan 2032 |
| Superconductor Analog to Digital Converter | 4 in force | to Aug 2029 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,344,069 | Superconducting Digital Phase Rotator In force · Medium confidence | In force | Medium confidence | |
| US 9,748,937 | Superconducting Digital Phase Rotator In force · Medium confidence | In force | Medium confidence | |
| US 9,020,079 | Wideband Digital Spectrometer In force · Medium confidence | In force | Medium confidence | |
| US 9,252,825 | Wideband Digital Spectrometer In force · High confidence | In force | High confidence | |
| US 9,577,690 | Wideband Digital Spectrometer In force · High confidence | In force | High confidence | |
| US 7,598,897 | Superconductor Analog-To-Digital Converter In force (reinstated) · High confidence | In force (reinstated) | High confidence | |
| US 10,382,132 | Digital Radio Frequency Transceiver System and Method In force · Medium confidence | In force | Medium confidence | |
| US 9,548,878 | Digital Radio Frequency Transceiver System and Method In force · Medium confidence | In force | Medium confidence | |
| US 8,521,117 | System and Method for Digital Interference Cancellation In force · High confidence | In force | High confidence | |
| US 9,793,933 | System and Method for Digital Interference Cancellation In force · High confidence | In force | High confidence |
Also on record, not counted in the 35: 38 patents in force now held by others · 33 patents ended · 1 application pending · 1 application 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.