Mask configured to maintain nutrient transport without producing visible diffraction patterns

US 8,460,374 In force

Overview Sources & methods

Term ends Feb 28, 2030 · High confidence

Computed 20-year base term

Held by Healthcare Royalty Partners II, L.P.

Filed Nov 30, 2005 as application 11/290,201 · Granted Jun 11, 2013

Base term plus 1429 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Feb 28, 2030

2004 2030

Clock starts
May 26, 2004

Term ends
Feb 28, 2030

Granted
Jun 11, 2013

base term patent term adjustment 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

1,429

Days of term adjustment

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

No effect

Terminal disclaimer

Resolved from the filed document, referencing US 7,628,810, to Apr 24, 2028. The term already ends on or before that date, so the cap shortened nothing.

3 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 May 26, 2004, when the earliest non-provisional application in its chain was filed (this one was filed Nov 30, 2005)	May 26, 2024	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+1429 days, USPTO patent term adjustment record	Apr 24, 2028	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 7,628,810)	resolves to Apr 24, 2028, no earlier than this term, so no change	High confidence
Patent term extension	+675 days, USPTO 35 U.S.C. 156 certificate	added to Apr 24, 2028: Feb 28, 2030	High confidence
Fee events	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Feb 28, 2030	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.

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

Mask configured to maintain nutrient transport without producing visible diffraction patterns

Term ends Feb 28, 2030 · High confidence

20-year base term ended May 26, 2024

How we calculated this date

Sources