The Patent Finder
US

Synthesis of Mdma or Its Optically Active (R)- or (S)-Mdma Isomers

US 11,993,577 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Pharmaceutical Advisors LLC, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Sep 1, 2042 · High confidence

Filed Sep 1, 2022 as application 17/901,504 · Granted May 28, 2024
Base term, 20 years from filing
Today
20 years from filing
2022 2042
Clock starts
Sep 1, 2022
Term ends
Sep 1, 2042
Granted
May 28, 2024
base term 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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 12,492,178, to Sep 1, 2042. The term already ends on or before that date, so the cap shortened nothing.
0 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.
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 3 maintenance fees are paid so far. 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Sep 1, 2022, when this application, 17/901,504, was filedSep 1, 2042High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 12,492,178)resolves to Sep 1, 2042, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderSep 1, 2042High confidence

This family

US 11,993,577this patent
Sep 2042
Sep 2042
US 12,492,178In force
Dec 2043
Dec 2043
Application 19/366,168Pending
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.
RecordedAssignorAssigneeConveyance
Dec 14, 2022
Reel 62084, frame 241
Fawaz, MajedAtai Life Sciences AGAssignment of Assignor's Interest
Feb 10, 2023
Reel 62662, frame 798
Morra, NicholasPharmaceutical Advisors, LLCAssignment of Assignor's Interest
Feb 13, 2023
Reel 62677, frame 953
Pharmaceutical Advisors, LLCAtai Life Sciences AGAssignment of Assignor's Interest
Sep 20, 2023
Reel 64970, frame 164
Atai Life Sciences AGEmpathbio, Inc.Assignment of Assignor's 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited