The Patent Finder
US

Cross-Linkable Polymer Compositions and Applications Thereof

US 12,729,261 In force
OverviewFamilyAssignmentsSources & methods

Term ends Jan 25, 2045 · High confidence

Filed Aug 7, 2023 as application 18/366,043 · Granted Sep 8, 2026
Base term plus 537 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2023 2045
Clock starts
Aug 7, 2023
Term ends
Jan 25, 2045
Granted
Sep 8, 2026
base term patent term adjustment 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
537
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 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.
5
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term runs 537 days past its 20-year base term on prosecution delay. 0 of 3 maintenance fees are paid so far. Confidence: High. from the record

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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Aug 7, 2023, when this application, 18/366,043, was filedAug 7, 2043High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+537 days, USPTO patent term adjustment recordJan 25, 2045High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJan 25, 2045High confidence

This family

Application 63/370,797Provisional application
no patent term
no patent term
Application 63/502,131Provisional application
no patent term
no patent term
US 12,729,261this patent
Jan 2045
Jan 2045
Application 63/550,722Provisional application
no patent term
no patent term
Application 19/047,833Pending
not computed
not computed
The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Nov 21, 2023
Reel 65641, frame 50
Yan, Jiaqi; Plaku, ManjolaKraton CorporationAssignment of Assignor's Interest
Nov 26, 2023
Reel 65660, frame 747
Kraton CorporationNotark LLCAssignment of Assignor's Interest
Jun 4, 2024
Reel 67608, frame 978
Notark LLCNotark CorporationCertificate of Conversion

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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited