Also listed on Corel TW Corp., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded May 1, 2026 (First-Citizens Bank & Trust Company).
Term ends Nov 20, 2030 · High confidence
20-year base term ends Aug 2, 2027
Held by Corel Corporation
Filed Aug 2, 2007 as application 11/832,655 · Granted Apr 9, 2013
Base term plus 1206 days of patent term adjustment (USPTO delay)
Today
2007
2030
Clock starts
Aug 2, 2007
Aug 2, 2007
Term ends
Nov 20, 2030
Nov 20, 2030
Granted
Apr 9, 2013
Apr 9, 2013
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
1,206
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.
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 runs 1206 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 Aug 2, 2007, when this application, 11/832,655, was filed | Aug 2, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1206 days, USPTO patent term adjustment record | Nov 20, 2030 | 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 | Nov 20, 2030 | High confidence |
This family
| US 8,416,221 | this patent Nov 2030 | Nov 2030 |
| US 9,304,684 | Lapsed on the fee record Apr 2020 | Apr 2020 |
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 |
|---|---|---|---|
| Aug 9, 2007 Reel 19675, frame 419 | Chang, Chien-chuan; Lin, Ming-huang | Intervideo, Digital Tech. Corp. | Assignment of Assignor's Interest |
| Apr 17, 2008 Reel 20814, frame 597 | Intervideo Digital Technology Corp. | Corel TW Corp. | Change of Name |
| Nov 22, 2010 Reel 25387, frame 45 | Corel TW Corporation | Corel Corporation | Assignment of Assignor's Interest |
| Jun 21, 2013 Reel 30657, frame 487 | Corel Corporation; Corel US Holdings, LLC; Corel Inc.; Winzip International LLC; Winzip Computing LLC; Winzip Computing LP | Wilmington Trust, National Association | Security Agreement |
| Dec 23, 2016 Reel 41187, frame 165 | Corel Corporation | Silicon Valley Bank, As Administrative Agent | Security Interest |
| Jan 4, 2017 Reel 41246, frame 1 | Wilmington Trust, National Association | Corel Corporation; Corel US Holdings,llc; Vapc (Lux) S.Á.R.L. | Release of Security Interest |
| Jan 4, 2017 reel/frame not recorded | Wilmington Trust, National Association | Corel Corporation | Release of Security Interest |
| Jan 4, 2017 reel/frame not recorded | Wilmington Trust, National Association | Corel US Holdings,llc | Release of Security Interest |
| Jan 4, 2017 reel/frame not recorded | Wilmington Trust, National Association | Vapc (Lux) S.Á.R.L. | Release of Security Interest |
| Jun 4, 2018 Reel 47229, frame 384 | Silicon Valley Bank, As Administrative Agent | Corel Corporation | Release of Security Interest |
| Jun 5, 2018 Reel 46299, frame 836 | Corel Corporation | UBS AG, Stamford Branch | Security Interest |
| Jul 3, 2019 Reel 49678, frame 950 | Cascade Bidco Corp.; Corel Inc.; Clearslide Inc. | Citibank, N.a. | Security Interest |
| Jul 3, 2019 Reel 49678, frame 980 | Cascade Bidco Corp.; Corel Inc.; Clearslide Inc. | Cantor Fitzgerald Securities | Security Interest |
| Jul 17, 2019 Reel 49773, frame 628 | UBS AG, Stamford Branch | Corel Corporation; Clearslide, Inc. | Release of Security Interest Recorded at : Reel 046299 Frame 0836 |
| Jul 17, 2019 reel/frame not recorded | UBS AG, Stamford Branch | Corel Corporation | Release of Security Interest Recorded at : Reel 046299 Frame 0836 |
| Jul 17, 2019 reel/frame not recorded | UBS AG, Stamford Branch | Clearslide, Inc. | Release of Security Interest Recorded at : Reel 046299 Frame 0836 |
| Jul 18, 2019 Reel 49787, frame 73 | UBS AG, Stamford Branch, as Administrative and Collateral Agent | Corel Corporation; Clearslide, Inc.; Parallels International GmbH | Release of Security Interest |
| Jul 18, 2019 reel/frame not recorded | UBS AG, Stamford Branch, as Administrative and Collateral Agent | Corel Corporation | Release of Security Interest |
| Jul 18, 2019 reel/frame not recorded | UBS AG, Stamford Branch, as Administrative and Collateral Agent | Clearslide, Inc. | Release of Security Interest |
| Jul 18, 2019 reel/frame not recorded | UBS AG, Stamford Branch, as Administrative and Collateral Agent | Parallels International GmbH | Release of Security Interest |
| May 1, 2026 Reel 75315, frame 928 | Corel Corporation | First-Citizens Bank & Trust Company | Security Interest |
| May 5, 2026 Reel 75559, frame 953 | Citibank, N.A., as Agent | Corel Corporation; Cascade Bidco Corp.; Corel Inc.; Clearslide Inc. | Release of Security Interest |
| May 5, 2026 reel/frame not recorded | Citibank, N.A., as Agent | Corel Corporation | Release of Security Interest |
| May 5, 2026 reel/frame not recorded | Citibank, N.A., as Agent | Cascade Bidco Corp. | Release of Security Interest |
| May 5, 2026 reel/frame not recorded | Citibank, N.A., as Agent | Corel Inc. | Release of Security Interest |
| May 5, 2026 reel/frame not recorded | Citibank, N.A., as Agent | Clearslide Inc. | Release of Security Interest |
| May 6, 2026 Reel 75522, frame 510 | Cantor Fitzgerald Securities, As Collateral Agent | Clearslide Inc.; Corel Corporation (as Successor in Interest to Cascade Bidco Corp.) | Termination and Release of Second Lien Security Interest in Patent Rights |
| May 6, 2026 reel/frame not recorded | Cantor Fitzgerald Securities, As Collateral Agent | Clearslide Inc. | Termination and Release of Second Lien Security Interest in Patent Rights |
| May 6, 2026 reel/frame not recorded | Cantor Fitzgerald Securities, As Collateral Agent | Corel Corporation (as Successor in Interest to Cascade Bidco Corp.) | Termination and Release of Second Lien Security Interest in Patent Rights |
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
Nov 2030
Term ends Nov 20, 2030. No further fees fall due before then
Note
The 1206 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.