Term ends Sep 30, 2035 · High confidence
20-year base term ends Sep 30, 2035
Held by Cadence Design Systems, Inc.
Filed Sep 30, 2015 as application 14/871,719 · Granted Jul 25, 2017
Base term, 20 years from filing
Today
2015
2035
Clock starts
Sep 30, 2015
Sep 30, 2015
Term ends
Sep 30, 2035
Sep 30, 2035
Granted
Jul 25, 2017
Jul 25, 2017
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.
33
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 Sep 30, 2015, when this application, 14/871,719, was filed | Sep 30, 2035 | 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 | Sep 30, 2035 | High confidence |
This family
| US 8,879,618 | In force Jun 2032 | Jun 2032 |
| US 8,878,568 | In force Oct 2032 | Oct 2032 |
| US 9,716,582 | this patent 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 |
|---|---|---|---|
| Sep 30, 2015 Reel 36698, frame 307 | Ramezani, Mehrdad; Cassan, David J.; Holdenried, Christopher D.; Van Ierssel, Marcus; Park, Sang-wook Paul | Semtech Corporation | Assignment of Assignor's Interest |
| Dec 14, 2015 Reel 37284, frame 745 | Semtech Corporation | HSBC Bank USA, National Association | Security Interest |
| Aug 5, 2016 Reel 39595, frame 371 | HSBC Bank USA, National Association, as Administrative Agent | Semtech Corporation | Partial Release of Security Interest in Patents |
| Aug 15, 2016 Reel 39435, frame 798 | Semtech Corporation | Rambus Inc. | Assignment of Assignor's Interest |
| 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
Sep 2035
Term ends Sep 30, 2035. Maintenance fees still fall due before then
Citations
12
later US patents cite this one
That is above the median of utility patents granted in 2017 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.