Term ends Jul 15, 2029 · High confidence
20-year base term ended Jun 30, 2026
Held by Open Text Inc.
Filed Jun 30, 2006 as application 11/477,807 · Granted Apr 9, 2013
Base term plus 1111 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Jun 30, 2006
Jun 30, 2006
Term ends
Jul 15, 2029
Jul 15, 2029
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
1,111
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.
6
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 1111 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 Jun 30, 2006, when this application, 11/477,807, was filed | Jun 30, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1111 days, USPTO patent term adjustment record | Jul 15, 2029 | 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 | Jul 15, 2029 | High confidence |
This family
| US 8,418,250 | this patent Jul 2029 | Jul 2029 |
| US 8,763,123 | Lapsed on the fee record Jun 2026 | Jun 2026 |
| US 8,726,389 | Term ended Jun 2026 | Jun 2026 |
| US 10,803,170 | Term ended Jun 2026 | Jun 2026 |
| US 11,379,582 | Lapsed on the fee record Jul 2026 | Jul 2026 |
| US 12,282,549 | Term ended Jun 2026 | Jun 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 |
|---|---|---|---|
| Aug 29, 2006 Reel 18192, frame 91 | Kuhn, Klaus-dieter; Vogt, Sebastian | Heraeus Kulzer GmbH | Assignment of Assignor's Interest |
| Sep 26, 2006 Reel 18348, frame 840 | Morris, Melvyn; Stubbs, Paul; Hartwig, Markus; Harter, Darren | Prevx Limited | Assignment of Assignor's Interest |
| Sep 25, 2008 Reel 21633, frame 939 | Kuhn, Klaus-dieter; Vogt, Sebastian | Heraeus Kulzer GmbH | Assignment of Assignor's Interest |
| May 28, 2014 Reel 32971, frame 778 | Prevx Ltd. | Webroot Solutions Ltd. | Change of Name |
| Oct 21, 2014 Reel 33995, frame 364 | Prevx Ltd. | Webroot Solutions Ltd. | Change of Name |
| Mar 3, 2016 Reel 37886, frame 85 | Webroot Solutions Ltd. | Webroot Inc. | Assignment of Assignor's Interest |
| May 17, 2016 Reel 38617, frame 467 | Webroot Inc. | Wells Fargo Bank, National Association | Security Interest |
| Mar 22, 2019 Reel 48668, frame 70 | Wells Fargo Bank, National Association | Webroot Inc. | Release of Security Interest |
| Mar 28, 2019 Reel 48723, frame 612 | Webroot Inc. | Barclays Bank PLC, as Collateral Agent | Security Interest |
| Dec 26, 2019 Reel 51418, frame 714 | Barclays Bank PLC, as Collateral Agent | Webroot Inc. | Release of Security Interest in Patent Rights Recorded at R/F 048723/0612 |
| Jun 29, 2023 Reel 64167, frame 129 | Webroot LLC | Carbonite, LLC | Assignment of Assignor's Interest |
| Jun 29, 2023 Reel 64176, frame 622 | Webroot Inc. | Webroot LLC | Certificate of Conversion |
| Jul 6, 2023 Reel 64351, frame 178 | Carbonite, LLC | Open Text Inc. | Assignment and Assumption Agreement |
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.
What's changing
Jul 2029
Term ends Jul 15, 2029. No further fees fall due before then
Note
The 1111 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
351
later US patents cite this one
That is top 1% 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.