Switchable Compound Laser Working Machine

US 8,748,775 Lapsed on the fee record

Overview Sources & methods

Lapsed Jun 10, 2026 on the fee record · High confidence

Computed 20-year base term

Third maintenance fee unpaid; grace period ended.

Held by Great Computer Corporation

Filed Dec 1, 2011 as application 13/309,106 · Granted Jun 10, 2014

Base term, 20 years from filing, plus 412 days of patent term adjustment (USPTO delay)

Today

Lapsed Jun 10, 2026

2011 2033

Clock starts
Dec 1, 2011

No longer in force
Jun 10, 2026

Granted
Jun 10, 2014

Term would have run to
Jan 16, 2033

base term patent term adjustment after the term ends fee events 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

412

Days of term adjustment

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

None

Terminal disclaimer

No disclaimer on this record.

2 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows 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 Dec 1, 2011, when this application, 13/309,106, was filed	Dec 1, 2031	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+412 days, USPTO patent term adjustment record	Jan 16, 2033	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	2 of 3 maintenance fees paid	lapsed Jun 10, 2026	High confidence
Computed term end	The steps above, in order	Jun 10, 2026	High 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.

Switchable Compound Laser Working Machine

Lapsed Jun 10, 2026 on the fee record · High confidence

20-year base term ends Dec 1, 2031

How we calculated this date

Sources