Also listed on Interfacial Solutions IP, LLC, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Mar 19, 2030 · High confidence

Computed 20-year base term

Held by Stratasys, Inc.

Filed Sep 13, 2011 as application 13/256,336 · Granted Mar 17, 2015

Base term, 20 years from filing

Today

20 years from filing

Term ends Mar 19, 2030

2010 2030

Clock starts
Mar 19, 2010

Term ends
Mar 19, 2030

Granted
Mar 17, 2015

base term 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

None

Term adjustment

No prosecution delay on this record.

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.

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 is its 20-year base term, with no adjustment for prosecution delay. 2 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.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Mar 19, 2010, when application PCT/US2010/027934, the earliest non-provisional in its chain, was filed (this one was filed Sep 13, 2011)	Mar 19, 2030	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	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	In force	High confidence
Computed term end	The steps above, in order	Mar 19, 2030	High confidence

This family

US 8,981,002	this patent Mar 2030	Mar 2030
US 9,714,319	In force Mar 2030	Mar 2030

2 of 3 applications in this family shown, earliest filings first. 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.

Recorded	Assignor	Assignee	Conveyance
Feb 19, 2013 Reel 29836, frame 602	Cernohous, Jeffrey J.; Van Gorden, Garrett S.	Interfacial Solutions IP, LLC	Assignment of Assignor's Interest
Apr 1, 2014 Reel 32569, frame 341	Interfacial Solutions IP, LLC	Interfacial Solutions LLC	Assignment of Assignor's Interest
Apr 28, 2014 Reel 32771, frame 616	Interfacial Solutions LLC	Stratasys, 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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Mar 2030

Term ends Mar 19, 2030.

Citations

later US patents cite this one

That is below the median of utility patents granted in 2015 in our data, the only group it is compared against. How we rank

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.

Biodegradable Polymer Compositions