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Last Updated: September 18, 2020

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Details for Patent: 8,497,393

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Summary for Patent: 8,497,393
Title:Process to prepare treprostinil, the active ingredient in Remodulin.RTM.
Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
Inventor(s): Batra; Hitesh (Herndon, VA), Tuladhar; Sudersan M. (Silver Spring, MD), Penmasta; Raju (Herndon, VA), Walsh; David A. (Palmyra, VA)
Assignee: United Therapeutics Corporation (Silver Spring, MD)
Application Number:13/548,446
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,497,393
Patent Claim Types:
see list of patent claims
Compound; Process;

Drugs Protected by US Patent 8,497,393

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
United Therap TYVASO treprostinil SOLUTION;INHALATION 022387-001 Jul 30, 2009 RX Yes Yes   Start Trial   Start Trial Y Y   Start Trial
United Therap ORENITRAM treprostinil diolamine TABLET, EXTENDED RELEASE;ORAL 203496-002 Dec 20, 2013 RX Yes No   Start Trial   Start Trial Y Y   Start Trial
United Therap ORENITRAM treprostinil diolamine TABLET, EXTENDED RELEASE;ORAL 203496-003 Dec 20, 2013 RX Yes Yes   Start Trial   Start Trial Y Y   Start Trial
United Therap ORENITRAM treprostinil diolamine TABLET, EXTENDED RELEASE;ORAL 203496-004 Dec 20, 2013 RX Yes No   Start Trial   Start Trial Y Y   Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 8,497,393

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 2710205   Start Trial
China 101903324   Start Trial
China 103274926   Start Trial
European Patent Office 2252570   Start Trial
European Patent Office 3287434   Start Trial
Spain 2630407   Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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