Also listed on Atwater Ventures Limited, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends no later than Feb 3, 2027 · Medium confidence
20-year base term ended Apr 4, 2026
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Filed Oct 19, 2007 as application 11/911,990 · Granted Nov 23, 2010
Base term plus 305 days of patent term adjustment (USPTO delay)
Today
2006
2027
Clock starts
Apr 4, 2006
Apr 4, 2006
Ends no later than
Feb 3, 2027
Feb 3, 2027
Granted
Nov 23, 2010
Nov 23, 2010
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
305
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.
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.
2
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 305 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. 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 Apr 4, 2006, when application PCT/JP2006/307087, the earliest non-provisional in its chain, was filed (this one was filed Oct 19, 2007) | Apr 4, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +305 days, USPTO patent term adjustment record | Feb 3, 2027 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Feb 3, 2027 | Medium confidence |
This family
| US 7,838,983 | this patent no later than Feb 2027 | no later than Feb 2027 |
1 of 2 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 |
|---|---|---|---|
| Oct 19, 2007 Reel 19986, frame 575 | Ishihara, Masamichi | Kyushu Institute of Technology | Assignment of Assignor's Interest |
| May 21, 2013 Reel 30490, frame 949 | Kyushu Institute of Technology | Atwater Ventures Limited | Assignment of Assignor's Interest |
| May 22, 2013 Reel 30492, frame 976 | Atwater Ventures Limited | Invensas Corporation | Assignment of Assignor's Interest |
| Dec 2, 2016 Reel 40797, frame 1 | Invensas Corporation; Tessera, Inc.; Tessera Advanced Technologies, Inc.; Ziptronix, Inc.; DigitalOptics Corporation; DigitalOptics Corporation Mems; DTS, LLC; DTS, Inc.; Phorus, Inc.; Ibiquity Digital Corporation | Royal Bank of Canada, as Collateral Agent | Security Interest |
| Jun 1, 2020 Reel 53468, frame 1 | Rovi Solutions Corporation; Rovi Technologies Corporation; Rovi Guides, Inc.; TiVo Solutions Inc.; Veveo, Inc.; Invensas Corporation; Invensas Bonding Technologies, Inc.; Tessera, Inc.; Tessera Advanced Technologies, Inc.; DTS, Inc.; Phorus, Inc.; Ibiquity Digital Corporation | Bank Of America, N.a. | Security Interest |
| Jun 11, 2020 Reel 52920, frame 1 | Royal Bank of Canada | Tessera, Inc.; Invensas Bonding Technologies, Inc. (F/K/A Ziptronix, Inc.); FotoNation Corporation (F/K/A DigitalOptics Corporation and F/K/A DigitalOptics Corporation Mems); Invensas Corporation; Tessera Advanced Technologies, Inc.; DTS, Inc.; DTS LLC; Phorus, Inc.; Ibiquity Digital Corporation | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | Tessera, Inc. | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | Invensas Bonding Technologies, Inc. (F/K/A Ziptronix, Inc.) | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | FotoNation Corporation (F/K/A DigitalOptics Corporation and F/K/A DigitalOptics Corporation Mems) | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | Invensas Corporation | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | Tessera Advanced Technologies, Inc. | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | DTS, Inc. | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | DTS LLC | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | Phorus, Inc. | Release of Security Interest |
| Jun 11, 2020 reel/frame not recorded | Royal Bank of Canada | Ibiquity Digital Corporation | Release of Security Interest |
| Nov 24, 2025 Reel 73508, frame 745 | Invensas LLC | Adeia Semiconductor Technologies LLC | Change of Name |
| Nov 24, 2025 Reel 73941, frame 814 | Invensas Corporation | Invensas LLC | Change of Name |
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.
What's changing
Feb 2027
Term ends no later than Feb 3, 2027. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 305 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 Feb 3, 2027. We will not guess the cap.
Citations
7
later US patents cite this one
That is below the median of utility patents granted in 2010 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.