Also listed on Schering-Plough Corporation, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Dec 11, 2027 · High confidence

Computed 20-year base term

Held by Intervet Inc.

Filed Dec 11, 2007 as application 11/954,143 · Granted May 18, 2010

Base term, 20 years from filing

Today

20 years from filing

Term ends Dec 11, 2027

2007 2027

Clock starts
Dec 11, 2007

Term ends
Dec 11, 2027

Granted
May 18, 2010

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.

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 is its 20-year base term, with no adjustment for 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 Dec 11, 2007, when this application, 11/954,143, was filed	Dec 11, 2027	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	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 11, 2027	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
Apr 30, 2008 Reel 20877, frame 971	Mattson, Jeanine D.; Gorman, Daniel M.; Malefyt, Rene De Waal; Morsey, Mohamad A.	Schering-Plough Animal Health Corporation; Schering-Plough Ltd.; Schering-Plough Pty. Limited	Assignment of Assignor's Interest
Apr 30, 2008 reel/frame not recorded	Morsey, Mohamad A.; Gorman, Daniel M.; Malefyt, Rene De Waal; Mattson, Jeanine D.	Schering-Plough Animal Health Corporation	Assignment of Assignor's Interest
Apr 30, 2008 reel/frame not recorded	Morsey, Mohamad A.; Gorman, Daniel M.; Malefyt, Rene De Waal; Mattson, Jeanine D.	Schering-Plough Ltd.	Assignment of Assignor's Interest
Apr 30, 2008 reel/frame not recorded	Morsey, Mohamad A.; Gorman, Daniel M.; Malefyt, Rene De Waal; Mattson, Jeanine D.	Schering-Plough Pty. Limited	Assignment of Assignor's Interest
May 29, 2008 Reel 21014, frame 790	Mattson, Jeanine D.; Gorman, Daniel M.; De Waal Malefyt, Rene; Morsey, Mohamad A.	Schering-Plough Animal Health Corporation; Schering-Plough Ltd.; Schering-Plough Pty. Limited	Corrective Assignment to Correct the Assignor: Malefyt, Rene De Waal Previously Recorded on Reel 020877 Frame 0971. Assignor(S) Hereby Confirms the Assignor Should Be: De Waal Malefyt, Rene.
May 29, 2008 reel/frame not recorded	Morsey, Mohamad A.; De Waal Malefyt, Rene; Gorman, Daniel M.; Mattson, Jeanine D.	Schering-Plough Animal Health Corporation	Corrective Assignment to Correct the Assignor: Malefyt, Rene De Waal Previously Recorded on Reel 020877 Frame 0971. Assignor(S) Hereby Confirms the Assignor Should Be: De Waal Malefyt, Rene.
May 29, 2008 reel/frame not recorded	Morsey, Mohamad A.; De Waal Malefyt, Rene; Gorman, Daniel M.; Mattson, Jeanine D.	Schering-Plough Ltd.	Corrective Assignment to Correct the Assignor: Malefyt, Rene De Waal Previously Recorded on Reel 020877 Frame 0971. Assignor(S) Hereby Confirms the Assignor Should Be: De Waal Malefyt, Rene.
May 29, 2008 reel/frame not recorded	Morsey, Mohamad A.; De Waal Malefyt, Rene; Gorman, Daniel M.; Mattson, Jeanine D.	Schering-Plough Pty. Limited	Corrective Assignment to Correct the Assignor: Malefyt, Rene De Waal Previously Recorded on Reel 020877 Frame 0971. Assignor(S) Hereby Confirms the Assignor Should Be: De Waal Malefyt, Rene.
Jan 24, 2019 Reel 48120, frame 380	Schering-Plough Ltd.	MSD International Holdings GmbH	Merger
Jan 25, 2019 Reel 48144, frame 476	Schering-Plough Animal Health Corporation	Intervet Inc.	Change of Name
Jan 28, 2019 Reel 48151, frame 525	Schering-Plough Pty. Limited	Merck Sharp & Dohme (Holdings) Pty Ltd.	Change of Name
Jan 29, 2019 Reel 48176, frame 132	MSD International Holdings GmbH; Intervet Inc.; Merck Sharp & Dohme (Holdings) Pty Ltd.	Intervet Inc.	Assignment of Assignor's Interest
Sep 26, 2023 Reel 65028, frame 818	Intervet Inc.	Intervet Inc.	Change of Address

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 2027

Term ends Dec 11, 2027. No further fees fall due before then

Citations

later US patents cite this one

That is below the median 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.

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