You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: December 25, 2024

Claims for Patent: 6,342,476

✉ Email this page to a colleague

« Back to Dashboard

Summary for Patent: 6,342,476

Title:	Copolymer-1 improvements in compositions of copolymers
Abstract:	The present invention relates to an improved composition of copolymer-1 comprising copolymer-1 substantially free of species having a molecular weight of over 40 kilodaltons.
Inventor(s):	Konfino; Eliezer (Ramat Gan, IL), Sela; Michael (Rehovot, IL), Teitelbaum; Dvora (Rehovot, IL), Arnon; Ruth (Rehovot, IL)
Assignee:	Yeda Research & Development Company Limited (Rehovot, IL)
Application Number:	09/510,141
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 6,342,476
Patent Claims:	1. A method for treating multiple sclerosis, comprising administering to a subject in need thereof, a pharmaceutically effective amount of a copolymer-1 fraction wherein said fraction contains less than 5% of species of copolymer-1 having a molecular weight of over 40 kilodaltons; and wherein over 75% of said copolymer-1 in said fraction is within a molecular weight range of about 2 kilodaltons to about 20 kilodaltons, wherein said copolymer-1 fraction is prepared by a process comprising the steps of: reacting protected copolymer-1 with hydrobromic acid to form trifluoroacetyl copolymer-1 having over 75% of its molar fraction within the molecular weight range from about 2 kDa to about 20 kDa, wherein said reaction takes place for a time and at a temperature predetermined by test reaction, and treating said trifluoroacetyl copolymer-1 having over 75% of its molar fraction within the molecular weight range from about 2 kDa to about 20 kDa with aqueous piperidine solution to form copolymer-1 having over 75% of its molar fraction within the molecular weight range from about 2 kDa to about 20 kDa.

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.