Posterior Segment Drug Delivery

US 11,642,310 In force

Term ends Jan 27, 2030 · Medium confidence

Computed 20-year base term

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 8,277,830), so the cap could be lower.

Held by Forsight VISION4, Inc.

Filed Apr 7, 2020 as application 16/842,059 · Granted May 9, 2023

Base term plus 149 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer

Today

20 years from filing

Term ends Jan 27, 2030

2010 2030

Clock starts
Jan 29, 2010

Term ends
Jan 27, 2030

Granted
May 9, 2023

base term after the term ends fee events 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

149

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

Capped

Terminal disclaimer

Resolved from the filed document, referencing US 10,617,557, US 10,656,152, US 8,277,830, US 8,399,006, US 8,795,712, US 8,808,727.

1 of 1

Maintenance fees paid

One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Jan 29, 2010, when the earliest non-provisional application in its chain was filed (this one was filed Apr 7, 2020)	Jan 29, 2030	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+149 days, USPTO patent term adjustment record	Jun 27, 2030	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 10,617,557, US 10,656,152, US 8,277,830, US 8,399,006, US 8,795,712, US 8,808,727)	capped to Jan 27, 2030	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	1 of 1 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Jan 27, 2030	Medium confidence

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

Posterior Segment Drug Delivery

Term ends Jan 27, 2030 · Medium confidence

20-year base term ends Jan 29, 2030

How we calculated this date

Sources