The Patent Finder
US

Additive for Performance Enhancement of Biopolymer Articles

US 10,351,701 In force
OverviewAssignmentsSources & methods

Term ends Mar 22, 2031 · High confidence

Filed Mar 22, 2011 as application 13/069,260 · Granted Jul 16, 2019
Base term plus 150 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
20 years from filing
2011 2031
Clock starts
Mar 22, 2011
Term ends
Mar 22, 2031
Granted
Jul 16, 2019
base term 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
150
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 9,321,549.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.

This patent's term runs 150 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 2 maintenance fees is 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 Mar 22, 2011, when this application, 13/069,260, was filedMar 22, 2031High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+150 days, USPTO patent term adjustment recordAug 19, 2031High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 9,321,549)capped to Mar 22, 2031High confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderMar 22, 2031High confidence

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
May 31, 2011
Reel 26365, frame 116
Georgelos, Paul; Montefusco, Pat; Wyslotsky, Bohdan; Skaggs, JeanneClear Lam Packaging, Inc.Assignment of Assignor's Interest
Apr 29, 2019
Reel 49017, frame 175
Clear Lam Packaging, Inc.Sonoco Development Inc.Assignment of Assignor's Interest
May 15, 2025
Reel 71338, frame 486
Sonoco Development, Inc.Toppan Packaging Americas Holdings, Inc.Assignment of Assignor's Interest

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 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited