Term ends May 7, 2029 · High confidence
20-year base term ends Dec 14, 2026
Filed Dec 14, 2006 as application 11/610,573 · Granted May 29, 2012
Base term plus 875 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Dec 14, 2006
Dec 14, 2006
Term ends
May 7, 2029
May 7, 2029
Granted
May 29, 2012
May 29, 2012
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
875
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.
6
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 875 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 Dec 14, 2006, when this application, 11/610,573, was filed | Dec 14, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +875 days, USPTO patent term adjustment record | May 7, 2029 | 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 | May 7, 2029 | High confidence |
This family
| US 8,189,396 | this patent May 2029 | May 2029 |
| US 8,456,922 | In force Dec 2026 | Dec 2026 |
| US 9,214,233 | In force Dec 2026 | Dec 2026 |
| US 10,468,109 | In force Dec 2026 | Dec 2026 |
| US 10,923,194 | In force Dec 2026 | Dec 2026 |
| US 11,594,281 | In force Dec 2026 | Dec 2026 |
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 |
|---|---|---|---|
| Dec 14, 2006 Reel 18634, frame 473 | Chen, Chung-zen; Lin, Yang-chieh; Kuo, Chung-shan | Elite Semiconductor Memory Technology Inc. | Assignment of Assignor's Interest |
| Oct 9, 2009 Reel 23348, frame 316 | Elite Semiconductor Memory Technology Inc. | MOSAID Technologies Incorporated | Assignment of Assignor's Interest |
| Jan 10, 2012 Reel 27512, frame 196 | 658276 N.B. Ltd.; 658868 N.B. Inc.; MOSAID Technologies Incorporated | Royal Bank of Canada | U.S. Intellectual Property Security Agreement (for Non-U.S. Grantors) - Short Form |
| Mar 13, 2014 Reel 32439, frame 638 | MOSAID Technologies Incorporated | Conversant Intellectual Property Management Inc. | Change of Name |
| Aug 7, 2014 Reel 33484, frame 344 | Royal Bank of Canada | Conversant Intellectual Property Management Inc.; Conversant IP N.B. 868 Inc.; Conversant IP N.B. 276 Inc. | Release of Security Interest |
| Aug 7, 2014 reel/frame not recorded | Royal Bank of Canada | Conversant Intellectual Property Management Inc. | Release of Security Interest |
| Aug 7, 2014 reel/frame not recorded | Royal Bank of Canada | Conversant IP N.B. 868 Inc. | Release of Security Interest |
| Aug 7, 2014 reel/frame not recorded | Royal Bank of Canada | Conversant IP N.B. 276 Inc. | Release of Security Interest |
| Sep 3, 2014 Reel 33678, frame 96 | Conversant Intellectual Property Management Inc. | Conversant Intellectual Property Management Inc. | Change of Address |
| Sep 9, 2014 Reel 33706, frame 367 | Conversant Intellectual Property Management Inc. | Cppib Credit Investments Inc., as Lender; Royal Bank of Canada, as Lender | U.S. Patent Security Agreement (for Non-U.S. Grantors) |
| Sep 9, 2014 reel/frame not recorded | Conversant Intellectual Property Management Inc. | Cppib Credit Investments Inc., as Lender | U.S. Patent Security Agreement (for Non-U.S. Grantors) |
| Sep 9, 2014 reel/frame not recorded | Conversant Intellectual Property Management Inc. | Royal Bank of Canada, as Lender | U.S. Patent Security Agreement (for Non-U.S. Grantors) |
| Aug 22, 2018 Reel 46900, frame 136 | Conversant Intellectual Property Management Inc. | Cppib Credit Investments, Inc. | Amended and Restated U.S. Patent Security Agreement (for Non-U.S. Grantors) |
| Oct 12, 2018 Reel 47645, frame 424 | Royal Bank of Canada, as Lender | Conversant Intellectual Property Management Inc. | Release of U.S. Patent Agreement (for Non-U.S. Grantors) |
| Nov 6, 2020 Reel 54344, frame 143 | Cppib Credit Investments Inc. | Conversant Intellectual Property Management Inc. | Release of Security Interest |
| Oct 19, 2021 Reel 58297, frame 486 | Conversant Intellectual Property Inc. | MOSAID Technologies Incorporated | Change of Name |
| Aug 29, 2023 Reel 64746, frame 547 | Conversant Intellectual Property Management Inc. | MOSAID Technologies Incorporated | Corrective Assignment to Correct the Conveying Party's Name Previously Recorded on Reel 058297 Frame 0486. Assignor(S) Hereby Confirms the 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.
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Alerts on its grants, lapses and transfers.
What's changing
May 2029
Term ends May 7, 2029. No further fees fall due before then
Note
The 875 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
13
later US patents cite this one
That is above the median of utility patents granted in 2012 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.