0 patents currently held
18 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 18 US patents in force on its record. from the record
Of the 18 now held by other companies, 18 name Alcon Inc. as their current owner. Each row says so.
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 Nov 2028 · High confidence
The most cited patent in this portfolio, cited by 131 later US patents, top 5% of utility patents granted in 2011 in our data. Protection runs to 2028.
now held by Alcon Inc.
Also notable
Ends Sep 2029 · High confidence
Cited by 87 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 2029.
now held by Alcon Inc.
Also notable
Ends Nov 2027 · High confidence
Cited by 55 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.
now held by Alcon Inc.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
Patents held now
Soonest term end first.
Also on record: 18 patents in force now held by others · 9 patents ended · 4 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.
6 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.