0 patents currently held, every record listed here
5 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 5 US patents in force on its record. from the record
Of the 5 now held by other companies, 5 name Donaldson Company 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
Each bar runs from grant to computed term end. 2023 to 2043.
US 11,739,126
Genetically Encoded Polypeptide for Affinity Capture and Purification of Biologics
Aug 15, 2039
US 12,269,847
Genetically Encoded Polypeptide for Affinity Capture and Purification of Biologics
Jan 4, 2042
US 12,637,664
Purification Matrices Comprising Aav-Binding Polypeptides and Methods of Using the Same
Mar 15, 2043
20272031203520392043
1 pending application: term is not computable until grant.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 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 Aug 2039 · High confidence
The most cited patent in this portfolio, cited by 5 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2039.
now held by Donaldson Company, Inc.
Also notable
Ends Feb 2041 · High confidence
The most cited patent in this portfolio, cited by 5 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2041.
now held by Donaldson Company, Inc.
Also notable
Ends Mar 2043 · High confidence
Granted 2026. Too new for citation comparison; protection runs to 2043.
now held by Donaldson Company, 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: 5 patents in force now held by others · 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.