0 patents currently held
42 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.
This portfolio holds none of the 42 US patents in force on its record. from the record
Of the 42 now held by other companies, 40 name Ligand Pharmaceuticals Incorporated as their current owner, and 2 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
none
Next term end
When these terms end
Held patents by the year their term ends
2026 · 0 end2027 · 02028 · 02029 · 02030 · 0
notable patents
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.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
None of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends Dec 2031 · High confidence
The most cited patent in this portfolio, cited by 147 later US patents, top 5% of utility patents granted in 2013 in our data. Protection runs to 2031.
now held by Ligand Pharmaceuticals Incorporated
Also notable
Ends Sep 2037 · High confidence
Cited by 50 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2037.
now held by Know Bio, LLC
Also notable
Ends Jun 2032 · High confidence
Cited by 58 later US patents, top 5% of utility patents granted in 2018 in our data, and renewed at every maintenance window due so far. Protection runs to 2032.
now held by Ligand Pharmaceuticals Incorporated
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- Sep 25Assignment recorded on 2 patents: Novan, Inc. to LNHC, Inc. Recorded Sep 25, 2026, executed Sep 27, 2023. Conveyance as recorded: Confirmatory Assignment. A recorded assignment is a filed document, not a statement of current ownership. Reel 76585, frame 936.
Patents held now
Soonest term end first.
Also on record: 42 patents in force now held by others · 14 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.
1 terminal disclaimer is on file with no resolved reference. No cap is applied and none is guessed
5 computed term dates come from a chain with an unresolved parent. A continuity parent has not yet been fetched from USPTO's records. The term is dated from this application's own claim; no earlier date is assumed until the parent is resolved.