Term ends Jun 30, 2032 · High confidence

Computed 20-year base term

Held by Cadence Design Systems, Inc.

Filed Sep 13, 2011 as application 13/231,300 · Granted Nov 4, 2014

Base term plus 291 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Jun 30, 2032

2011 2032

Clock starts
Sep 13, 2011

Term ends
Jun 30, 2032

Granted
Nov 4, 2014

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

291

Days of term adjustment

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

None

Terminal disclaimer

No disclaimer on this record.

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.

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 291 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Sep 13, 2011, when this application, 13/231,300, was filed	Sep 13, 2031	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+291 days, USPTO patent term adjustment record	Jun 30, 2032	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	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Jun 30, 2032	High confidence

This family

US 8,879,618	this patent Jun 2032	Jun 2032
US 8,878,568	In force Oct 2032	Oct 2032
US 9,716,582	In force Sep 2035	Sep 2035
US 10,211,972	In force Sep 2035	Sep 2035
Application PCT/US2018/045046	PCT application no patent term	no patent term
Application PCT/US2019/023913	PCT application no patent term	no patent term
US 10,637,696	In force Jun 2039	Jun 2039
Application PCT/US2019/044052	PCT application no patent term	no patent term

8 of 33 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
Apr 26, 2012 Reel 28111, frame 240	Abdalla, Mohamed; Cassan, David; Van Ierssel, Marcus; Holdenried, Chris; Sadr, Saman	Gennum Corporation	Assignment of Assignor's Interest
Apr 26, 2012 Reel 28111, frame 433	Rezayee, Afshin	Gennum Corporation	Assignment of Assignor's Interest
May 2, 2013 Reel 30341, frame 99	Semtech Corporation; Semtech New York Corporation; Sierra Monolithics, Inc.	HSBC Bank USA, National Association	Security Agreement
Jun 7, 2013 Reel 30565, frame 874	Gennum Corporation	Semtech Canada Inc.	Change of Name
Jun 7, 2013 Reel 30575, frame 52	Semtech Canada Inc.	Semtech Canada Corporation	Change of Name
Aug 5, 2016 Reel 39595, frame 388	HSBC Bank USA, National Association, as Administrative Agent	Semtech Corporation; Semtech New York Corporation; Sierra Monolithics, Inc.	Partial Release of Security Interest in Patents
Aug 5, 2016 reel/frame not recorded	HSBC Bank USA, National Association, as Administrative Agent	Semtech Corporation	Partial Release of Security Interest in Patents
Aug 5, 2016 reel/frame not recorded	HSBC Bank USA, National Association, as Administrative Agent	Semtech New York Corporation	Partial Release of Security Interest in Patents
Aug 5, 2016 reel/frame not recorded	HSBC Bank USA, National Association, as Administrative Agent	Sierra Monolithics, Inc.	Partial Release of Security Interest in Patents
Aug 15, 2016 Reel 39436, frame 16	Semtech Canada Corporation	Rambus Inc.	Assignment of Assignor's Interest
Aug 16, 2016 Reel 39698, frame 250	Semtech Canada Corporation	Rambus Canada Inc.	Corrective Assignment to Correct the Assignee Name Previously Recorded at Reel: 039435 Frame: 0016. Assignor(S) Hereby Confirms the Assignment.
Sep 22, 2023 Reel 65017, frame 449	Rambus Inc.	Cadence Design Systems, 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

Jun 2032

Term ends Jun 30, 2032. No further fees fall due before then

Note

The 291 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

later US patents cite this one

That is top 10% of utility patents granted in 2014 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.

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