Also listed on Perspecsys Corp., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jun 6, 2032 · High confidence
20-year base term ends Apr 19, 2032
Held by CA, Inc.
Filed Apr 19, 2012 as application 13/450,879 · Granted Apr 28, 2015
Base term plus 48 days of patent term adjustment (USPTO delay)
Today
2012
2032
Clock starts
Apr 19, 2012
Apr 19, 2012
Term ends
Jun 6, 2032
Jun 6, 2032
Granted
Apr 28, 2015
Apr 28, 2015
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
48
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
This patent's term runs 48 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Apr 19, 2012, when this application, 13/450,879, was filed | Apr 19, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +48 days, USPTO patent term adjustment record | Jun 6, 2032 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jun 6, 2032 | High confidence |
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 |
|---|---|---|---|
| Apr 19, 2012 Reel 28075, frame 127 | Ang, George Weilun; Townsend, Derek Jon; Woelfel, John Harold; Woloszyn, Terrence Peter | Perspecsys Inc. | Assignment of Assignor's Interest |
| May 22, 2012 Reel 28253, frame 32 | Ang, George Weilun, MR.; Townsend, Derek Jon, MR.; Woelfel, John Harold, MR.; Woloszyn, Terrence Peter, MR. | Perspecsys Inc. | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 028075 Frame 0127. Assignor(S) Hereby Confirms the Correction of the Assignee Address from "86 Healey Drive" to "86 Healey Road". |
| Jul 29, 2014 Reel 33416, frame 1 | Perspecsys Inc. | Perspecsys Canada Inc. | Change of Name |
| Jul 29, 2014 Reel 33444, frame 282 | Perspecsys Canada Inc. | Perspecsys Corp. | Change of Name |
| Jul 29, 2014 Reel 33452, frame 89 | Perspecsys Corp. | Perspecsys Corp. | Change of Address |
| Nov 24, 2015 Reel 37131, frame 443 | Perspecsys Corp. | Blue Coat Systems, Inc. | Assignment of Assignor's Interest |
| Mar 14, 2016 Reel 37968, frame 908 | Blue Coat Systems, Inc. | Jefferies Finance LLC, as the Collateral Agent | Security Interest |
| Aug 1, 2016 Reel 39516, frame 929 | Jefferies Finance LLC | Blue Coat Systems, Inc. | Release of Security Interest |
| Aug 27, 2016 Reel 39851, frame 44 | Blue Coat Systems, Inc. | Symantec Corporation | Assignment of Assignor's Interest |
| Nov 21, 2019 Reel 51144, frame 918 | Symantec Corporation | CA, 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jun 2032
Term ends Jun 6, 2032.
Note
The 48 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
44
later US patents cite this one
That is top 10% of utility patents granted in 2015 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.