Term ends no later than Jun 5, 2029 · Medium confidence
20-year base term ended May 24, 2025
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
May 24, 2005
Jun 5, 2029
Jun 19, 2012
This patent's term runs 1473 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts May 24, 2005, when this application, 11/136,338, was filed | May 24, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1473 days, USPTO patent term adjustment record | Jun 5, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Jun 5, 2029 | Medium confidence |
This family
| US 8,204,580 | this patent no later than Jun 2029 | no later than Jun 2029 |
| US 7,715,905 | In force Mar 2027 | Mar 2027 |
| Application PCT/US2005/018542 | PCT application no patent term | no patent term |
| US 8,483,807 | Term ended May 2026 | May 2026 |
| US 8,954,137 | Term ended no later than Oct 2025 | no later than Oct 2025 |
| US 8,983,587 | Term ended May 2025 | May 2025 |
| US 9,445,736 | Term ended no later than May 2025 | no later than May 2025 |
| US 9,770,181 | Term ended May 2025 | May 2025 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| May 5, 2006 Reel 17583, frame 985 | Kurzweil Technologies, Inc. | United Therapeutics Corporation | Assignment of Assignor's Interest |
| May 5, 2006 Reel 17589, frame 25 | Kurzweil, Raymond C.; Albrecht, Paul; Gibson, Lucy | Kurzweil Technologies, Inc. | Assignment of Assignor's Interest |
| Mar 30, 2011 Reel 26051, frame 858 | United Therapeutics Corporation | Medicomp, Inc. | Assignment of Assignor's Interest |
| Mar 3, 2014 Reel 32336, frame 607 | Kurzweil, Raymond C.; Albrecht, Paul; Gibson, Lucy | Medicomp, Inc. | Assignment of Assignor's Interest |
| Jan 4, 2023 Reel 62278, frame 308 | Medicomp, Inc. | Truist Bank | Notice of Grant of Security Interest in Patents |
| Sep 30, 2025 Reel 72430, frame 464 | Medicomp, Inc.; Watermark Medical, Inc. | Fifth Third Bank, National Association | Security Interest |
| Oct 3, 2025 Reel 72457, frame 824 | Truist Bank | Medicomp, Inc. | Release of Security Interest |
| Jun 30, 2026 Reel 75142, frame 291 | Medicomp, Inc. | Fifth Third Bank, National Association, as Administrative Agent | Security 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.
What's changing
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jun 5, 2029. We will not guess the cap.