Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods

US 11,273,028 Lapsed on the fee record

Overview Sources & methods

Lapsed Mar 15, 2026 on the fee record · From the USPTO record

Computed 20-year base term

First maintenance fee unpaid; grace period ended.

Named at grant Refocus Group Inc. · find this owner

Filed Sep 24, 2020 as application 17/031,600 · Granted Mar 15, 2022

Base term, 20 years from filing, plus 68 days of patent term adjustment (USPTO delay)

Today

Lapsed Mar 15, 2026

2007 2027

Clock starts
Jul 11, 2007

No longer in force
Mar 15, 2026

Granted
Mar 15, 2022

Term would have run to
Sep 17, 2027

base term patent term adjustment after the term ends 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

Days of term adjustment

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

None

Terminal disclaimer

No disclaimer on this record.

0 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 Jul 11, 2007, when the earliest non-provisional application in its chain was filed (this one was filed Sep 24, 2020)	Jul 11, 2027	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+68 days, USPTO patent term adjustment record	Sep 17, 2027	High confidence
Terminal disclaimer cap	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	0 of 1 maintenance fees paid	lapsed Mar 15, 2026	High confidence
Computed term end	The steps above, in order	Mar 15, 2026	From the USPTO record

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.

Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods

Lapsed Mar 15, 2026 on the fee record · From the USPTO record

20-year base term ends Jul 11, 2027

How we calculated this date

Sources