Lapsed May 28, 2021 on the fee record · Medium confidence
20-year base term ends Jun 30, 2030
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
Second maintenance fee unpaid; grace period ended.
Filed Oct 7, 2011 as application 13/267,985 · Granted May 28, 2013
Base term, 20 years from filing, plus 3 days of patent term adjustment (USPTO delay)
Today
Lapsed May 28, 2021
2010
2030
Clock starts
Jun 30, 2010
Jun 30, 2010
No longer in force
May 28, 2021
May 28, 2021
Granted
May 28, 2013
May 28, 2013
Term would have run to
Jul 3, 2030
Jul 3, 2030
base term
after the term ends
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
3
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 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.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Jul 3, 2030: its 20-year base term plus 3 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. 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 Jun 30, 2010, when application 12/827,545, the earliest non-provisional in its chain, was filed (this one was filed Oct 7, 2011) | Jun 30, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +3 days, USPTO patent term adjustment record | Jul 3, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed May 28, 2021 | High confidence |
| Computed term end | The steps above, in order | May 28, 2021 | Medium confidence |
This family
| US 8,035,416 | Lapsed on the fee record Oct 2019 | Oct 2019 |
| US 8,451,024 | this patent May 2021 | May 2021 |
| US 9,007,801 | In force Apr 2031 | Apr 2031 |
| US 9,270,269 | In force Jun 2030 | Jun 2030 |
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 |
|---|---|---|---|
| Jan 3, 2012 Reel 27469, frame 507 | Shepard, Daniel R. | Contour Semiconductor, Inc. | Assignment of Assignor's Interest |
| Jan 18, 2013 Reel 29659, frame 615 | Contour Semiconductor, Inc. | American Capital, Ltd.; Still River Fund III, Limited Partnership; Running Deer Trust; Running Deer Foundation; Sarah G. Kurzon 2001 Revocable Trust; Perrin, Donald | Security Agreement |
| Jan 18, 2013 reel/frame not recorded | Contour Semiconductor, Inc. | American Capital, Ltd. | Security Agreement |
| Jan 18, 2013 reel/frame not recorded | Contour Semiconductor, Inc. | Still River Fund III, Limited Partnership | Security Agreement |
| Jan 18, 2013 reel/frame not recorded | Contour Semiconductor, Inc. | Running Deer Trust | Security Agreement |
| Jan 18, 2013 reel/frame not recorded | Contour Semiconductor, Inc. | Running Deer Foundation | Security Agreement |
| Jan 18, 2013 reel/frame not recorded | Contour Semiconductor, Inc. | Sarah G. Kurzon 2001 Revocable Trust | Security Agreement |
| Jan 18, 2013 reel/frame not recorded | Contour Semiconductor, Inc. | Perrin, Donald | Security Agreement |
| May 30, 2014 Reel 33063, frame 617 | Contour Semiconductor, Inc. | American Capital, Ltd. | Security Interest |
| Jun 20, 2014 Reel 33204, frame 428 | Contour Semiconductor, Inc. | American Capital, Ltd.; Still River Fund III, Limited Partnership; Sarah G. Kurzon 2001 Revocable Trust; Ovonyx, Inc.; Perrin, Donald; Running Deer Foundation; Running Deer Trust | Security Interest |
| Jun 20, 2014 reel/frame not recorded | Contour Semiconductor, Inc. | American Capital, Ltd. | Security Interest |
| Jun 20, 2014 reel/frame not recorded | Contour Semiconductor, Inc. | Still River Fund III, Limited Partnership | Security Interest |
| Jun 20, 2014 reel/frame not recorded | Contour Semiconductor, Inc. | Sarah G. Kurzon 2001 Revocable Trust | Security Interest |
| Jun 20, 2014 reel/frame not recorded | Contour Semiconductor, Inc. | Ovonyx, Inc. | Security Interest |
| Jun 20, 2014 reel/frame not recorded | Contour Semiconductor, Inc. | Perrin, Donald | Security Interest |
| Jun 20, 2014 reel/frame not recorded | Contour Semiconductor, Inc. | Running Deer Foundation | Security Interest |
| Jun 20, 2014 reel/frame not recorded | Contour Semiconductor, Inc. | Running Deer Trust | Security Interest |
| Jun 24, 2014 Reel 33225, frame 330 | American Capital, Ltd. | Contour Semiconductor, Inc. | Release of Security Interest |
| May 15, 2015 Reel 35685, frame 571 | American Capital, Ltd.; Still River Fund III, Limited Partnership; Sarah G. Kurzon 2001 Revocable Trust; Ovonyx, Inc.; Perrin, Donald; Running Deer Foundation; Running Deer Trust | Contour Semiconductor, Inc. | Release of Security Interest |
| May 20, 2015 Reel 35749, frame 956 | American Capital, Ltd.; Still River Fund III, Limited Partnership; Sarah G. Kurzon 2001 Revocable Trust; Ovonyx, Inc.; Perrin, Donald; Running Deer Foundation; Running Deer Trust | Contour Semiconductor, Inc. | Release of Security Interest |
| May 21, 2015 Reel 35748, frame 909 | Contour Semiconductor, Inc. | HGST Netherlands B.V. | Assignment of Assignor's Interest |
| Jun 2, 2015 Reel 35831, frame 594 | Contour Semiconductor, Inc. | HGST, Inc. | Corrective Assignment to Correct the Name and Address of the Assignee Previously Recorded on Reel 035748 Frame 0909. Assignor(S) Hereby Confirms the Name and Address of the Assignee Si HGST, INC.,3403 Yerba Buena Road,san Jose, Ca 95135. |
| Jul 19, 2016 Reel 39389, frame 684 | HGST, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Agreement |
| Aug 16, 2016 Reel 39689, frame 950 | JPMorgan Chase Bank, N.A., as Collateral Agent | HGST, Inc. | Release of Security Interest |
| Aug 24, 2018 Reel 46939, frame 587 | HGST, Inc. | Western Digital Technologies, Inc. | Assignment of Assignor's Interest |
| Feb 8, 2022 Reel 58965, frame 535 | Jpmorgan Chase Bank, N.a. | Western Digital Technologies, Inc. | Release of Security Interest at Reel 039389 Frame 0684 |
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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 3 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than May 28, 2021. We will not guess the cap.
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2013 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.