Also listed on Atoptech, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Feb 27, 2033 · High confidence
20-year base term ends Feb 27, 2033
Held by Siemens Industry Software Inc.
Filed Feb 27, 2013 as application 13/779,615 · Granted Jan 13, 2015
Base term, 20 years from filing
Today
2013
2033
Clock starts
Feb 27, 2013
Feb 27, 2013
Term ends
Feb 27, 2033
Feb 27, 2033
Granted
Jan 13, 2015
Jan 13, 2015
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
This patent's term is its 20-year base term, with no adjustment for 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 27, 2013, when this application, 13/779,615, was filed | Feb 27, 2033 | 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 | 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 | Feb 27, 2033 | 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 |
|---|---|---|---|
| May 24, 2013 Reel 30485, frame 608 | Tzeng, Ping-san | Atoptech, Inc. | Assignment of Assignor's Interest |
| Jun 19, 2017 Reel 42751, frame 437 | Atoptech, Inc. | Avatar Integrated Systems, Inc. | Assignment of Assignor's Interest |
| Jul 16, 2020 Reel 53224, frame 268 | Avatar Integrated Systems, Inc. | Mentor Graphics Corporation | Security Interest |
| Aug 21, 2020 Reel 53558, frame 632 | Mentor Graphics Corporation | Avatar Integrated Systems, Inc. | Release of Security Interest |
| Dec 2, 2020 Reel 54514, frame 76 | Avatar Integrated Systems, Inc.; Siemens Industry Software Inc. | Siemens Industry Software Inc. | Merger and 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.
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Alerts on its grants, lapses and transfers.
What's changing
Feb 2033
Term ends Feb 27, 2033. No further fees fall due before then
Citations
21
later US patents cite this one
That is top 25% 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.