Term ended Nov 30, 2025 · High confidence
20-year base term ended Nov 30, 2025
Held by OSRAM AG
Filed Mar 12, 2012 as application 13/417,516 · Granted Nov 11, 2014
Base term, 20 years from filing
Today
Term ended Nov 30, 2025
2005
2026
Clock starts
Nov 30, 2005
Nov 30, 2005
Term ended
Nov 30, 2025
Nov 30, 2025
Granted
Nov 11, 2014
Nov 11, 2014
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.
None
Terminal disclaimer
No disclaimer on this record.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
3
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. 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 Nov 30, 2005, when application PCT/DE2005/002154, the earliest non-provisional in its chain, was filed (this one was filed Mar 12, 2012) | Nov 30, 2025 | 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 | 2 of 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Nov 30, 2025 | High confidence |
This family
| US 8,159,144 | In force Aug 2027 | Aug 2027 |
| US 8,884,521 | this patent Nov 2025 | Nov 2025 |
2 of 3 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Mar 13, 2012 Reel 27853, frame 532 | Behr, Gerhard; Biebl, Alois; Hackenbuchner, Stefan; Helbig, Peter; Hirschmann, Gunther; Reiners, Thomas; Vollmer, Ralf | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen MBH | Assignment of Assignor's Interest |
| Mar 13, 2012 Reel 27853, frame 669 | Engl, Moritz; Haas, Heinz; Hofmann, Markus; Huber, Rainer; Reill, Joachim | OSRAM Opto Semiconductors GmbH | Assignment of Assignor's Interest |
| Mar 13, 2012 Reel 27853, frame 812 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen MBH | OSRAM Gesellschaft Mit Beschrankter Haftung | Merger |
| Mar 13, 2012 Reel 27853, frame 945 | OSRAM Gesellschaft Mit Beschrankter Haftung | OSRAM AG | Change of Name |
| Apr 10, 2012 Reel 28023, frame 574 | OSRAM Gesellschaft Mit Beschrankter Haftung | OSRAM AG | Corrective Assignment to Correct the Address of Assignee, Osram Ag Previously Recorded on Reel 027853 Frame 0945. Assignor(S) Hereby Confirms the Correct Address of the Assignee, Osram Ag Is: Hellabrunner Strasse 1, 81543 Munich, Germany. |
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.
Citations
7
later US patents cite this one
That is above the median of utility patents granted in 2014 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.