Also listed on IPR Licensing, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 2, 2027 · High confidence
20-year base term ended Feb 7, 2021
Held by Apple Inc.
Filed Feb 7, 2001 as application 09/778,474 · Granted May 8, 2012
Base term plus 2275 days of patent term adjustment (USPTO delay)
Today
2001
2027
Clock starts
Feb 7, 2001
Feb 7, 2001
Term ends
May 2, 2027
May 2, 2027
Granted
May 8, 2012
May 8, 2012
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
2,275
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.
54
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 2275 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 Feb 7, 2001, when this application, 09/778,474, was filed | Feb 7, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +2275 days, USPTO patent term adjustment record | May 2, 2027 | 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 2, 2027 | High confidence |
This family
| US 6,542,481 | Term ended Aug 2018 | Aug 2018 |
| US 7,079,523 | Lapsed on the fee record Jul 2018 | Jul 2018 |
| US 8,175,120 | this patent May 2027 | May 2027 |
| US 6,678,260 | Term ended Jul 2018 | Jul 2018 |
| US 7,936,728 | Term ended Mar 2021 | Mar 2021 |
| US 7,496,072 | Term ended Feb 2020 | Feb 2020 |
| US 7,551,663 | Term ended Aug 2023 | Aug 2023 |
| US 7,221,664 | Term ended no later than Jul 2020 | no later than Jul 2020 |
8 of 54 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 15, 2001 Reel 11803, frame 61 | Nelson, G. Rodney Jr.; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, James, A. JR. | Tantivy Communications, Inc. | Assignment of Assignor's Interest |
| Jan 22, 2002 Reel 12506, frame 808 | Tantivy Communications, Inc. | Silicon Valley Bank | Security Agreement |
| Jun 24, 2002 Reel 13019, frame 791 | Tantivy Communications, Inc. | Silicon Valley Bank | Security Interest |
| Jun 25, 2002 Reel 13045, frame 200 | Tantivy Communications, Inc. | Silicon Valley Bank | Security Agreement |
| Apr 28, 2003 Reel 13974, frame 213 | Silicon Valley Bank | Tantivy Communications, Inc. | Release |
| Jul 24, 2003 Reel 14289, frame 207 | Tantivy Communications, Inc. | Ipr Holdings Delaware, Inc. | Security Interest |
| Feb 19, 2004 Reel 14351, frame 777 | InterDigital Acquisition Corporation | InterDigital Patent Corporation | Assignment of Assignor's Interest |
| Feb 26, 2004 Reel 15000, frame 141 | Tantivy Communications, Inc. | InterDigital Acquisition Corp. | Assignment of Assignor's Interest |
| Feb 26, 2004 Reel 15000, frame 577 | InterDigital Acquisition Corp. | InterDigital Patent Corporation | Merger |
| Mar 10, 2004 Reel 14420, frame 435 | InterDigital Patent Corporation | Ipr Licensing, Inc. | Assignment of Assignor's Interest |
| Jun 8, 2012 Reel 28345, frame 179 | Silicon Valley Bank | Tantivy Communications, Inc. | Release of Security Interest |
| Jun 8, 2012 Reel 28349, frame 387 | Tantivy Communications, Inc. | Ipr Holdings Delaware, Inc. | License |
| Jan 2, 2013 Reel 29555, frame 660 | Ipr Licensing, Inc. | Intel Corporation | Assignment of Assignor's Interest |
| Jun 25, 2020 Reel 53066, frame 210 | Intel Corporation | Apple Inc. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
May 2027
Term ends May 2, 2027. No further fees fall due before then
Note
The 2275 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
65
later US patents cite this one
That is top 10% 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.