Term ends Dec 2, 2026 · High confidence

Computed 20-year base term

Held by Accuray LLC

Filed Jul 21, 2006 as application 11/459,055 · Granted Jan 5, 2010

Base term plus 134 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Dec 2, 2026

2006 2026

Clock starts
Jul 21, 2006

Term ends
Dec 2, 2026

Granted
Jan 5, 2010

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

134

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

3 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.

This patent's term runs 134 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jul 21, 2006, when this application, 11/459,055, was filed	Jul 21, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+134 days, USPTO patent term adjustment record	Dec 2, 2026	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	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Dec 2, 2026	High confidence

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
Nov 7, 2006 Reel 18489, frame 562	Ruchala, Kenneth J.; Olivera, Gustavo H.; Lu, Weiguo; Schnarr, Eric; Haimerl, Jason; Mackie, Thomas R.; Kapatoes, Jeffrey M.	Tomotherapy Incorporated	Assignment of Assignor's Interest
Jan 13, 2016 Reel 37513, frame 170	Accuray Incorporated; Tomotherapy Incorporated	Cerberus Business Finance, LLC, as Collateral Agent	Assignment for Security - Patents
Jun 15, 2017 Reel 42821, frame 580	Cerberus Business Finance, LLC. as Collateral Agent	Accuray Incorporated; Tomotherapy Incorporated	Release of Security Interest
Jun 15, 2017 Reel 42826, frame 358	Accuray Incorporated; Tomotherapy Incorporated	Midcap Funding IV Trust (as Successor by Assignment from Midcap Financial Trust)	Security Interest
Jun 15, 2017 reel/frame not recorded	Cerberus Business Finance, LLC. as Collateral Agent	Accuray Incorporated	Release of Security Interest
Jun 15, 2017 reel/frame not recorded	Cerberus Business Finance, LLC. as Collateral Agent	Tomotherapy Incorporated	Release of Security Interest
Dec 19, 2017 Reel 44910, frame 685	Accuray Incorporated; Tomotherapy Incorporated	Midcap Financial Trust	Security Interest
Mar 1, 2019 Reel 48481, frame 804	Midcap Funding X Trust (as Successor by Assignment from Midcap Funding IV Trust, as Successor by Assignment from Midcap Financial Trust), as Existing Administrative Agent	Midcap Funding IV Trust, as Successor to Existing Administrative Agent	Assignment of Security Agreements
May 14, 2021 Reel 56247, frame 1	Accuray Incorporated; Tomotherapy Incorporated	Silicon Valley Bank, as Administrative and Collateral Agent	Security Interest
May 20, 2021 Reel 56318, frame 559	Midcap Funding IV Trust (as Successor by Assignment from Midcap Funding X Trust, as Successor by Assignment from Midcap Funding IV Trust, as Successor by Assignment from Midcap Financial Trust)	Accuray Incorporated; Tomotherapy Incorporated	Release of Security Interest
May 20, 2021 Reel 56318, frame 751	Midcap Financial Trust	Accuray Incorporated; Tomotherapy Incorporated	Release of Security Interest
May 20, 2021 reel/frame not recorded	Midcap Funding IV Trust (as Successor by Assignment from Midcap Funding X Trust, as Successor by Assignment from Midcap Funding IV Trust, as Successor by Assignment from Midcap Financial Trust)	Accuray Incorporated	Release of Security Interest
May 20, 2021 reel/frame not recorded	Midcap Funding IV Trust (as Successor by Assignment from Midcap Funding X Trust, as Successor by Assignment from Midcap Funding IV Trust, as Successor by Assignment from Midcap Financial Trust)	Tomotherapy Incorporated	Release of Security Interest
May 20, 2021 reel/frame not recorded	Midcap Financial Trust	Accuray Incorporated	Release of Security Interest
May 20, 2021 reel/frame not recorded	Midcap Financial Trust	Tomotherapy Incorporated	Release of Security Interest
Jul 11, 2023 Reel 64218, frame 337	Tomotherapy Incorporated	Accuray Incorporated	Assignment of Assignor's Interest
Jun 6, 2025 Reel 71638, frame 34	First-Citizens Bank & Trust Company	Accuray Incorporated	Release of Security Interest
Sep 8, 2025 Reel 72189, frame 891	Accuray Incorporated	Accuray LLC	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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Dec 2026

Term ends Dec 2, 2026. No further fees fall due before then

Note

The 134 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

later US patents cite this one

That is top 10% of utility patents granted in 2010 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

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.

Method and System for Evaluating Delivered Dose