Collateral for a security interest recorded Oct 15, 2020 (Intellectual Ventures Assets 91 LLC).
Lapsed May 28, 2025 on the fee record · Medium confidence
20-year base term ends May 9, 2027
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 7,782,413), so the cap could be lower.
Third maintenance fee unpaid; grace period ended.
Held by Mec Management, LLC
Filed Apr 20, 2010 as application 12/799,163 · Granted May 28, 2013
Base term, 20 years from filing, plus 147 days of patent term adjustment (USPTO delay)
Today
Lapsed May 28, 2025
2007
2027
Clock starts
May 9, 2007
May 9, 2007
No longer in force
May 28, 2025
May 28, 2025
Granted
May 28, 2013
May 28, 2013
Term would have run to
Oct 3, 2027
Oct 3, 2027
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
147
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 7,782,413, to Oct 3, 2027. The term already ends on or before that date, so the cap shortened nothing.
2 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 Oct 3, 2027: its 20-year base term plus 147 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: 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 May 9, 2007, when application 11/801,304, the earliest non-provisional in its chain, was filed (this one was filed Apr 20, 2010) | May 9, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +147 days, USPTO patent term adjustment record | Oct 3, 2027 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,782,413) | resolves to Oct 3, 2027, no earlier than this term, so no change | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed May 28, 2025 | High confidence |
| Computed term end | The steps above, in order | May 28, 2025 | Medium confidence |
This family
| US 7,782,413 | In force no later than Apr 2028 | no later than Apr 2028 |
| US 8,451,394 | this patent May 2025 | May 2025 |
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 |
|---|---|---|---|
| Mar 21, 2011 Reel 26008, frame 715 | Tohoku University | Advanced Interconnect Materials, LLC | Assignment of Assignor's Interest |
| Apr 23, 2012 Reel 28091, frame 965 | Koike, Junichi | Tohoku University | Assignment of Assignor's Interest |
| Apr 23, 2012 Reel 28092, frame 21 | Kawakami, Hideaki | Advanced Interconnect Materials, LLC | Assignment of Assignor's Interest |
| Apr 23, 2012 Reel 28092, frame 60 | Advanced Interconnect Materials, LLC | Altiam Services Ltd., LLC | Assignment of Assignor's Interest |
| Oct 22, 2015 Reel 36855, frame 346 | Altiam Services Ltd. LLC | Xenogenic Development Limited Liability Company | Merger |
| Aug 27, 2018 Reel 46717, frame 310 | Xenogenic Development Limited Liability Company | Intellectual Ventures Assets 84 LLC | Assignment of Assignor's Interest |
| Aug 23, 2019 Reel 50144, frame 82 | Bylas District Economic Enterprise LLC | Mec Management, LLC | Assignment of Assignor's Interest |
| Oct 15, 2020 Reel 54071, frame 566 | Bylas District Economic Enterprise, LLC | Intellectual Ventures Assets 91 LLC; Intellectual Ventures Assets 84 LLC | Security Interest |
| Oct 15, 2020 reel/frame not recorded | Bylas District Economic Enterprise, LLC | Intellectual Ventures Assets 91 LLC | Security Interest |
| Oct 15, 2020 reel/frame not recorded | Bylas District Economic Enterprise, LLC | Intellectual Ventures Assets 84 LLC | Security 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 147 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 7,782,413, ends no earlier than this term, so it caps nothing.
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.