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Details for Patent: 6,121,291

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Patent 6,121,291 protects PAXIL and PAXIL CR and is included in four NDAs. There have been zero Paragraph IV challenges on Paxil CR and

Protection for PAXIL has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has eight patent family members in seven countries.

This patent has expired prematurely due to non-payment of maintenance fees. See details below.

Summary for Patent: 6,121,291

Title: Paroxetine in the treatment of depression associated with withdrawal from heroin abuse and post-traumatic stress disorder
Abstract:This invention relates to the use of paroxetine or a pharmaceutically acceptable salt thereof for the treatment of post-traumatic stress disorder and depression associated with withdrawal from heroin abuse.
Inventor(s): Gleason; Maurice (Newbury, GB)
Assignee: SmithKline Beecham plc (Brentford, GB)
Application Number:09/142,990
Patent Claim Types:
see list of patent claims
Patent Metrics:
Source: PatentQuant.com
Field: Not categorized
Back Citations: 4th percentile
Forward Citations: 0th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Apotex Technologies
paroxetine hydrochloride
SUSPENSION;ORAL020710-001Jun 25, 1997RXYes6,121,291*PEDSep 17, 2017Y
Apotex Technologies
paroxetine hydrochloride
TABLET;ORAL020031-001Dec 29, 1992RXNo6,121,291*PEDSep 17, 2017Y
Apotex Technologies
paroxetine hydrochloride
TABLET;ORAL020031-002Dec 29, 1992RXNo6,121,291*PEDSep 17, 2017Y
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Premature patent expiration for: 6,121,291

Expiration due to failure to pay maintenance fee

Patent Number Expiration Date
6,121,291 September 19, 2012

Foreign Priority and PCT Information for Patent: 6,121,291

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9605828Mar 20, 1996
PCT Information
PCT FiledMarch 17, 1997PCT Application Number:PCT/EP97/01353
PCT Publication Date:September 25, 1997PCT Publication Number: WO97/34602

International Patent Family for Patent: 6,121,291

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office1300144► subscribe
Spain2199357► subscribe
European Patent Office0893997► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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