Collateral for a security interest recorded Aug 21, 2023 (JPMorgan Chase Bank, N.A.).
Lapsed Apr 5, 2024 on the fee record · High confidence
20-year base term ends Mar 10, 2030
Second maintenance fee unpaid; grace period ended.
Filed May 20, 2014 as application 14/282,444 · Granted Apr 5, 2016
Base term, 20 years from filing, plus 14 days of patent term adjustment (USPTO delay)
Today
Lapsed Apr 5, 2024
2010
2030
Clock starts
Mar 10, 2010
Mar 10, 2010
No longer in force
Apr 5, 2024
Apr 5, 2024
Granted
Apr 5, 2016
Apr 5, 2016
Term would have run to
Mar 24, 2030
Mar 24, 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
14
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,773,881, to Mar 24, 2030. The term already ends on or before that date, so the cap shortened nothing.
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.
2
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 Mar 24, 2030: its 20-year base term plus 14 days of term adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 10, 2010, when application 12/720,843, the earliest non-provisional in its chain, was filed (this one was filed May 20, 2014) | Mar 10, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +14 days, USPTO patent term adjustment record | Mar 24, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,773,881) | resolves to Mar 24, 2030, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Apr 5, 2024 | High confidence |
| Computed term end | The steps above, in order | Apr 5, 2024 | High confidence |
This family
| US 8,773,881 | In force Apr 2031 | Apr 2031 |
| US 9,305,624 | this patent Apr 2024 | Apr 2024 |
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 |
|---|---|---|---|
| May 29, 2014 Reel 32983, frame 767 | Shepard, Daniel R. | Contour Semiconductor, Inc. | Assignment of Assignor's Interest |
| 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 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 |
| Aug 21, 2023 Reel 64715, frame 1 | Western Digital Technologies, Inc. | Jpmorgan Chase Bank, N.a. | Patent Collateral Agreement - A&r Loan Agreement |
| Aug 21, 2023 Reel 67045, frame 156 | Western Digital Technologies, Inc. | Jpmorgan Chase Bank, N.a. | Patent Collateral Agreement - DDTL Loan Agreement |
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
The 14 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,773,881, ends no earlier than this term, so it caps nothing.
Citations
22
later US patents cite this one
That is top 25% of utility patents granted in 2016 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.