Term ends Sep 3, 2028 · High confidence
20-year base term ended Apr 12, 2026
Held by Mesoblast, Inc.
Filed May 5, 2020 as application 16/867,252 · Granted Apr 15, 2025
Base term plus 875 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Apr 12, 2006
Apr 12, 2006
Term ends
Sep 3, 2028
Sep 3, 2028
Granted
Apr 15, 2025
Apr 15, 2025
base term
patent term adjustment
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
875
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.
8
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 875 days past its 20-year base term on prosecution delay. No maintenance fee can end this term early. 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 12, 2006, when application PCT/AU2006/000494, the earliest non-provisional in its chain, was filed (this one was filed May 5, 2020) | Apr 12, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +875 days, USPTO patent term adjustment record | Sep 3, 2028 | 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 | No maintenance fee can end the term early | In force | High confidence |
| Computed term end | The steps above, in order | Sep 3, 2028 | High confidence |
This family
| US 8,367,405 | In force Mar 2030 | Mar 2030 |
| Application 13/736,790 | Abandoned not computed | not computed |
| Application 14/621,470 | Abandoned not computed | not computed |
| US 9,783,617 | Term ended Apr 2026 | Apr 2026 |
| Application 15/651,469 | Abandoned not computed | not computed |
| US 12,275,801 | this patent Sep 2028 | Sep 2028 |
| Application 19/080,304 | Pending not computed | not computed |
7 of 8 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 |
|---|---|---|---|
| May 14, 2020 Reel 52667, frame 167 | Gronthos, Stan; Zannettino, Andrew Christopher William; Simmons, Paul John | Mesoblast, Inc. | Assignment of Assignor's Interest |
| May 14, 2020 Reel 52672, frame 900 | Angioblast Systems, Inc. | Mesoblast, Inc. | Change of Name |
| Dec 10, 2021 Reel 58957, frame 447 | Mesoblast Limited Acn 109 431 870; Mesoblast UK Limited; Mesoblast, Inc. (Formerly Known as Angioblast, Inc.); Mesoblast International Sàrl | Oaktree Fund Administration, LLC | Security Interest |
| Jan 2, 2026 Reel 74174, frame 183 | Oaktree Fund Administration, LLC, as Agent | Mesoblast Limited; Mesoblast UK Limited; Mesoblast, Inc. (Formerly Known as Angioblast, Inc.); Mesoblast International Sàrl | Release of Security Interest in Intellectual Property |
| Jan 2, 2026 reel/frame not recorded | Oaktree Fund Administration, LLC, as Agent | Mesoblast Limited | Release of Security Interest in Intellectual Property |
| Jan 2, 2026 reel/frame not recorded | Oaktree Fund Administration, LLC, as Agent | Mesoblast UK Limited | Release of Security Interest in Intellectual Property |
| Jan 2, 2026 reel/frame not recorded | Oaktree Fund Administration, LLC, as Agent | Mesoblast, Inc. (Formerly Known as Angioblast, Inc.) | Release of Security Interest in Intellectual Property |
| Jan 2, 2026 reel/frame not recorded | Oaktree Fund Administration, LLC, as Agent | Mesoblast International Sàrl | Release of Security Interest in Intellectual Property |
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
Sep 2028
Term ends Sep 3, 2028. No further fees fall due before then
Note
The 875 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
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.