Also listed on Mesoblast, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends no later than Oct 6, 2031 · Low confidence
20-year base term ends Oct 6, 2031
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.
Held by Mesoblast International SARL
Filed Mar 19, 2015 as application 14/662,344 · Granted May 8, 2018
Base term, 20 years from filing
Today
2011
2031
Clock starts
Oct 6, 2011
Oct 6, 2011
Ends no later than
Oct 6, 2031
Oct 6, 2031
Granted
May 8, 2018
May 8, 2018
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
7
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. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 2 of 3 maintenance fees are paid so far. Confidence: Low. 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 Oct 6, 2011, when application 13/267,363, the earliest non-provisional in its chain, was filed (this one was filed Mar 19, 2015); a parent in its chain could not be resolved (the next row) | Oct 6, 2031 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Oct 6, 2031 | Low confidence |
This family
| Application 13/267,363 | Abandoned not computed | not computed |
| US 9,828,586 | In force Oct 2031 | Oct 2031 |
| US 9,963,678 | this patent no later than Oct 2031 | no later than Oct 2031 |
| US 10,550,369 | In force Jan 2032 | Jan 2032 |
| US 11,708,560 | In force Oct 2031 | Oct 2031 |
| US 12,410,405 | In force Oct 2031 | Oct 2031 |
| Application 19/293,945 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Jan 18, 2018 Reel 44658, frame 68 | Ton, Christopher, DR.; Danilkovitch, Alla, DR.; Tom, Samson, DR. | Osiris Therapeutics, Inc. | Assignment of Assignor's Interest |
| Jan 18, 2018 Reel 44658, frame 721 | Osiris Therapeutics, Inc. | Mesoblast International SARL | Assignment of Assignor's Interest |
| Mar 28, 2018 Reel 45759, frame 917 | Mesoblast International SARL | Hercules Capital, Inc., as Administrative and Collateral Agent | Intellectual Property Security Agreement |
| Jul 10, 2018 Reel 46515, frame 222 | Mesoblast International SARL | NQP SPV II, L.P., as Administrative Agent and Collateral Agent | Intellectual Property Security Agreement |
| 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 |
| Jul 30, 2025 Reel 72297, frame 753 | Hercules Capital, Inc., as Agent | Mesoblast International SARL | Release of Intellectual Property Security Agreement at Reel/Frame No. 45759/0917 |
| 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 |
| Jun 29, 2026 Reel 75853, frame 93 | NQP SPV II, L.P., as Agent | Mesoblast International Sàrl | Release of Security Interest in Intellectual Property Collateral at Reel/Frame No. 46515/0222 |
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
Oct 2031
Term ends no later than Oct 6, 2031. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Oct 6, 2031. We will not guess the cap.
Citations
43
later US patents cite this one
That is top 10% of utility patents granted in 2018 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.