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Serving hundreds of leading biopharmaceutical companies globally:

Cipla
McKinsey
Federal Trade Commission
QuintilesIMS
US Army
Chubb
AstraZeneca
Argus Health
Express Scripts

Generated: May 21, 2018

DrugPatentWatch Database Preview

Details for Patent: 5,135,950

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Summary for Patent: 5,135,950
Title: Stable polymorphic form of (E)-N,N-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide and the process for its preparation
Abstract:Stable and crystallographically essentially pure polymorphic form A of (E)-N,N-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitro-phenyl)acrylamide may be prepared by crystallizing crude synthesis product from lower aliphatic carboxylic acid such as formic or acetic acid with a catalytic amount of hydrochloric or hydrobromic acid added. The product is a potent inhibitor of catechol-O-methyl-transferase enzyme (COMT).
Inventor(s): Pippuri; Aino K. (Espoo, FI), Honkanen; Erkki J. (Vantaa, FI), Haarala; Jorma V. (Helsinki, FI)
Assignee: Orion-yhtyma Oy (Espoo, FI)
Application Number:07/606,717
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 5,135,950
Patent Claim Types:
see list of patent claims
Compound; Process; Use; Composition;

Drugs Protected by US Patent 5,135,950

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Foreign Priority and PCT Information for Patent: 5,135,950

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8924838.9Nov 03, 1989

International Family Members for US Patent 5,135,950

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Germany 69022166 ➤ Try a Free Trial
Germany 122004000014 ➤ Try a Free Trial
Denmark 0426468 ➤ Try a Free Trial
European Patent Office 0426468 ➤ Try a Free Trial 91071 Luxembourg ➤ Try a Free Trial
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Boehringer Ingelheim
QuintilesIMS
Chinese Patent Office
UBS
Cerilliant
Teva
AstraZeneca
Johnson and Johnson
Mallinckrodt

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