Term ended Jan 24, 2026 · High confidence
20-year base term ended Jan 24, 2026
Held by Sigma Designs Israel S.D.I Ltd.
Filed Apr 28, 2009 as application 12/431,433 · Granted Feb 22, 2011
Base term, 20 years from filing
Today
Term ended Jan 24, 2026
2006
2026
Clock starts
Jan 24, 2006
Jan 24, 2006
Term ended
Jan 24, 2026
Jan 24, 2026
Granted
Feb 22, 2011
Feb 22, 2011
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 7,558,294, to Jan 24, 2026. The term already ends on or before that date, so the cap shortened nothing.
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 is its 20-year base term, with no 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. All three maintenance fees were paid, so no fee lapse ended it. 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 Jan 24, 2006, when application 11/339,293, the earliest non-provisional in its chain, was filed (this one was filed Apr 28, 2009) | Jan 24, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,558,294) | resolves to Jan 24, 2026, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Jan 24, 2026 | High confidence |
This family
| US 7,558,294 | In force Feb 2028 | Feb 2028 |
| US 7,894,487 | this patent Jan 2026 | Jan 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 |
|---|---|---|---|
| May 6, 2009 Reel 22648, frame 471 | Petranovich, James E.; Riedel, Neal K.; Peponides, George M. | Conexant Systems, Inc. | Assignment of Assignor's Interest |
| May 6, 2009 Reel 22648, frame 532 | Gavette, Sherman Leon | Sharp Corporation | Assignment of Assignor's Interest |
| May 6, 2009 Reel 22648, frame 546 | Yonge, III, Lawrence W.; Katar, Srinivas; Vandermey, Timothy J. | Intellon Corporation | Assignment of Assignor's Interest |
| May 8, 2009 Reel 22665, frame 719 | Conexant Systems, Inc. | Coppergate Communications Ltd. | Assignment of Assignor's Interest |
| Mar 19, 2010 Reel 24103, frame 834 | Intellon Corporation | Atheros Powerline LLC | Merger |
| Mar 19, 2010 Reel 24103, frame 872 | Atheros Powerline LLC | Atheros Communications, Inc. | Assignment of Assignor's Interest |
| Nov 30, 2011 Reel 27301, frame 678 | Atheros Communications, Inc. | Qualcomm Atheros, Inc. | Merger |
| Jan 2, 2013 Reel 29555, frame 769 | Qualcomm Atheros, Inc. | Qualcomm Incorporated | Assignment of Assignor's Interest |
| Apr 26, 2013 Reel 30292, frame 952 | Coppergate Communications Ltd. | Sigma Designs Israel S.D.I Ltd. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 7,558,294, ends no earlier than this term, so it caps nothing.
Citations
45
later US patents cite this one
That is top 25% of utility patents granted in 2011 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.