The Patent Finder
US

Radiosurgical Planning and Treatment

US 9,956,428 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Rising Tide Foundation, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Feb 10, 2036 · High confidence

Held by City of Hope
Filed Jul 18, 2014 as application 14/334,685 · Granted May 1, 2018
Base term plus 572 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2014 2036
Clock starts
Jul 18, 2014
Term ends
Feb 10, 2036
Granted
May 1, 2018
base term patent term adjustment 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
572
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
2
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 572 days past its 20-year base term on prosecution delay. 2 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 Jul 18, 2014, when this application, 14/334,685, was filedJul 18, 2034High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+572 days, USPTO patent term adjustment recordFeb 10, 2036High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderFeb 10, 2036High confidence

This family

US 9,956,428this patent
Feb 2036
Feb 2036
US 10,350,436In force
Jul 2034
Jul 2034
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
Nov 7, 2014
Reel 34124, frame 248
Kelly, Douglas ACancer Treatment Centers of America Professional Corporation of Oklahoma, Inc.Assignment of Assignor's Interest
Nov 20, 2014
Reel 34216, frame 157
Cancer Treatment Centers of America Global, Inc.Rising Tide FoundationAssignment of Assignor's Interest
Nov 20, 2014
Reel 34216, frame 125
Cancer Treatment Centers of America Professional Corporation of Oklahoma, Inc.Cancer Treatment Centers of America Global, Inc.Assignment of Assignor's Interest
Mar 22, 2018
Reel 45320, frame 159
Rising Tide FoundationGenerations International Asset Management Company LLCAssignment of Assignor's Interest
May 30, 2019
Reel 49323, frame 207
Generations International Asset Management Company LLCInternational Private Bank LLCChange of Name
Oct 21, 2022
Reel 61496, frame 888
International Private Bank LLCCoh Holdco Inc.Assignment of Assignor's Interest
Nov 15, 2023
Reel 65571, frame 254
Coh Holdco Inc.City of HopeAssignment 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 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited