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Last Updated: July 4, 2020

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Details for Patent: 7,301,023


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Summary for Patent: 7,301,023
Title:Chiral salt resolution
Abstract: A method for resolving enantiomers of a compound containing the structure of the forula: ##STR00001## wherein R.sup.4 or R.sup.5 may contan one or more asymmetric centers, by mixing a racemic mixture of enantiomers of a compound, containing the structure of said formula; in a solvent, with a resolving compound having a defined sterospecificity, to form a solution and with said resolving agent being capable of binding with at least one but not all of said enantiomers to form a precipitate, containing said at least one of said enantiomers in sterospecific form and collecting either the precipitate and purifying it or collecting the solution with contained other of said enantiomers and recrystallizing the enantiomer contained in said solution.
Inventor(s): Flanagan; Mark E. (Gales Ferry, CT), Munchhof; Michael J. (Salem, CT)
Assignee: Pfizer Inc. (New York, NY)
Application Number:10/154,699
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 7,301,023
Patent Claim Types:
see list of patent claims
Use; Formulation;

Recent additions to Drugs Protected by US Patent 7,301,023

These patents are from the daily update and have not yet been integrated into the regular database
Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Product Substance Delist Req. Patent Expiration Usecode Patented / Exclusive Use
Pf Prism Cv XELJANZ tofacitinib citrate TABLET 203214 Nov 6, 2012 RX Yes   Start Trial Y   Start Trial
Pf Prism Cv XELJANZ tofacitinib citrate TABLET 203214 May 30, 2018 RX Yes   Start Trial Y   Start Trial
Pfizer Inc XELJANZ XR tofacitinib citrate TABLET, EXTENDED RELEASE 208246 Feb 23, 2016 RX Yes   Start Trial Y   Start Trial
Pfizer Inc XELJANZ XR tofacitinib citrate TABLET, EXTENDED RELEASE 208246 Dec 12, 2019 RX Yes   Start Trial Y   Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Type >RLD >Patent No. >Product >Substance >Delist Req. >Patent Expiration >Usecode >Patented / Exclusive Use

Drugs Protected by US Patent 7,301,023

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Pfizer Inc XELJANZ XR tofacitinib citrate TABLET, EXTENDED RELEASE;ORAL 208246-001 Feb 23, 2016 RX Yes Yes   Start Trial   Start Trial Y   Start Trial
Pfizer Inc XELJANZ XR tofacitinib citrate TABLET, EXTENDED RELEASE;ORAL 208246-002 Dec 12, 2019 RX Yes No   Start Trial   Start Trial Y   Start Trial
Pf Prism Cv XELJANZ tofacitinib citrate TABLET;ORAL 203214-001 Nov 6, 2012 RX Yes No   Start Trial   Start Trial Y   Start Trial
Pf Prism Cv XELJANZ tofacitinib citrate TABLET;ORAL 203214-002 May 30, 2018 RX Yes Yes   Start Trial   Start Trial 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

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