2 patents currently held
113 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.
6 more records may belong here and await a decision; they are not counted.
The next term ends in Jul 2042. from the record
Of the 113 now held by other companies, 72 name Silicon Laboratories Inc. as their current owner, and 41 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Jul 2042
Next term end
1
Patent families
When these terms end
Held patents by the year their term ends
notable patents
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.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Only 1 of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends Jan 2038 · High confidence
Cited by 24 later US patents, top 10% of utility patents granted in 2019 in our data. Protection runs to 2038.
now held by Silicon Laboratories Inc.
Also notable
Ends Oct 2037 · High confidence
Cited by 20 later US patents, top 25% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2037.
now held by Silicon Laboratories Inc.
Also notable
Ends Jan 2041 · High confidence
A family of 6 related applications built on the 2022 grant. Protection runs to 2041.
now held by Ceremorphic, Inc.
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 Aug 13, 2027The maintenance fee for Efficient Storage of Blockchain in Embedded Device (US 11,902,426) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
Recent changes
- 1 term has ended since Aug 17, 2026
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
| Efficient Storage of Blockchain in Embedded Device | 2 in force | to Aug 2042 |
Patents held now
Soonest term end first.
Showing 1 to 2 of 2
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 12,107,966 | Device Authentication using Blockchain held by Ceremorphic, Inc. In force · High confidence | In force | High confidence | |
| US 11,902,426 | Efficient Storage of Blockchain in Embedded Device held by Ceremorphic, Inc. In force · High confidence | In force | High confidence |
Also on record, not counted in the 2: 113 patents in force now held by others · 18 patents ended · 13 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
4 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed