0 patents currently held, every record listed here
9 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 9 US patents in force on its record. from the record
Of the 9 now held by other companies, 8 were conveyed to Flagship Pioneering Innovations VI LLC in the filing they arrived in, and 1 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
Each bar runs from grant to computed term end. 2021 to 2043.
US 12,480,117
Compositions Comprising Modified Circular Polyribonucleotides and Uses Thereof
Dec 21, 2042
US 12,636,369
Compositions Comprising Circular Polyribonucleotides for Protein Modulation and Uses Thereof
Jun 30, 2043
20262031203620412043
4 pending applications: term is not computable until grant.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 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 2038 · High confidence
The most cited patent in this portfolio, cited by 8 later US patents, top 25% of utility patents granted in 2021 in our data. Protection runs to 2038.
conveyed to Flagship Pioneering Inc. - now held by Flagship Pioneering Innovations VI, LLC
Also notable
Ends Jun 2043 · High confidence
Granted 2026. Too new for citation comparison; protection runs to 2043.
conveyed to Flagship Pioneering Inc. - now held by Flagship Pioneering Innovations VI, LLC
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: 9 patents in force now held by others · 4 applications pending · 3 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.