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Details for Patent: 6,335,335

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Patent 6,335,335 protects ISTALOL and is included in one NDA. There has been one Paragraph IV challenge on Istalol. There is one tentative approval for the compound protected by this patent. Additional details are available via the generic ingredient links below.

This patent has eight patent family members in seven countries.

Summary for Patent: 6,335,335

Title: Prolonged-action eye drop
Abstract:Eye drops containing a .beta.-blocker such as cartelol hydrochloride are improved in the penetration of the .beta.-blocker into the eye and the retention thereof in the eye tissues by the incorporation of a C.sub.3-7 fatty acid such as sorbic acid to the eye preparations.
Inventor(s): Higashiyama; Masayo (Kobe, JP), Ohtori; Akira (Kobe, JP)
Assignee: Senju Pharmaceutical Co., Ltd. (Osaka, JP)
Application Number:09/802,860
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 6th 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
Bausch And Lomb
ISTALOL
timolol maleate
SOLUTION/DROPS;OPHTHALMIC021516-001Jun 4, 2004RXYes6,335,335► subscribeY
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Foreign Priority and PCT Information for Patent: 6,335,335

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan9-302802Nov 05, 1997
Japan10-250009Sep 03, 1998

Non-Orange Book Patents for Patent: 6,335,335

For Orange Book-listed patents (shown in the main table above) generic applications must certify that the listed patents are expired, invalid, or will not be infringed by generic entry.

The non-Orange Book patents listed below do not require formal certifications, so they do not automatically impede generic entry. Instead, they represent potential opportunities for branded firms to block generic entry through patent infringment challenges.

Patent No. Title Estimated Patent Expiration
6,645,963 Prolonged-action eye drop► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Because of the complexity of determining patent expiration dates it is advisable to have patent counsel verify freedom to operate.

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International Patent Family for Patent: 6,335,335

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada2307303► subscribe
China1124842► subscribe
China1278162► 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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