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Post# of 252435
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genisi

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genisi

Re: stockbettor post# 123635

Thursday, 07/21/2011 3:34:58 AM

Thursday, July 21, 2011 3:34:58 AM

Post# of 252435
No need to apologize. Amgen has several unexpired G-CSF PEGylation patents in the US 5,824,778, US 5,824,784 (the one you've found), US 6,166,183. From a quick look i suspect they only cover PEGylation when PEG molecule is attached to any amino acid via a carboxyl group at the N-terminus of the protein. Ratiopharm uses a different PEGylation method. See also #msg-65405618
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