Lapsed May 12, 2023 on the fee record · High confidence
20-year base term ends Apr 3, 2027
Second maintenance fee unpaid; grace period ended.
Held by Daedalus Blue LLC
Filed May 3, 2007 as application 11/743,982 · Granted May 12, 2015
Base term, 20 years from filing, plus 2350 days of patent term adjustment (USPTO delay)
Today
Lapsed May 12, 2023
2007
2033
Clock starts
Apr 3, 2007
Apr 3, 2007
No longer in force
May 12, 2023
May 12, 2023
Granted
May 12, 2015
May 12, 2015
Term would have run to
Sep 8, 2033
Sep 8, 2033
base term
patent term adjustment
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
2,350
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
18
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 Sep 8, 2033: its 20-year base term plus 2350 days of term adjustment for prosecution delay. 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 Apr 3, 2007, when application 11/695,983, the earliest non-provisional in its chain, was filed (this one was filed May 3, 2007) | Apr 3, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +2350 days, USPTO patent term adjustment record | Sep 8, 2033 | 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 | 1 of 3 maintenance fees paid | lapsed May 12, 2023 | High confidence |
| Computed term end | The steps above, in order | May 12, 2023 | High confidence |
This family
| US 9,626,684 | In force Aug 2029 | Aug 2029 |
| Application 11/744,024 | Abandoned not computed | not computed |
| US 9,031,857 | this patent May 2023 | May 2023 |
| US 9,846,883 | In force Apr 2032 | Apr 2032 |
| Application 11/764,524 | Abandoned not computed | not computed |
| US 8,639,563 | In force Apr 2032 | Apr 2032 |
| US 8,812,355 | In force Jun 2029 | Jun 2029 |
| US 9,031,858 | Lapsed on the fee record May 2023 | May 2023 |
8 of 18 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 |
|---|---|---|---|
| May 4, 2007 Reel 19250, frame 49 | Angell, Robert Lee; Kraemer, James R. | Internatinal Business Machines Corporation | Assignment of Assignor's Interest |
| May 22, 2007 Reel 19330, frame 151 | Angell, Robert Lee; Kraemer, James R. | International Business Machines Corporation | Assignment of Assignor's Interest |
| Nov 14, 2019 Reel 51018, frame 649 | International Business Machines Corporation | Daedalus Group LLC | Assignment of Assignor's Interest |
| Jan 29, 2020 Reel 51737, frame 191 | Daedalus Group, LLC | Daedalus Blue LLC | 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.
What's changing
Note
The 2350 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
41
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.