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Re: Patent invalidity - Markush groups

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Posted by M. Arthur Auslander on January 09, 2001 at 13:10:55:

In Reply to: Patent invalidity - Markush groups posted by Ray Walsh on January 09, 2001 at 07:15:30:

: If it is determined that one member of a Markush group is invalid, does that invalidate the entire claim or just the portion of the claim that relates to that member?

Dear Ray Walsh,

The answer to that would have to be researched. It is also possible that there are conflicting cases on the issue.

M. Arthur Auslander
Auslander & Thomas-Intellectual Property Law Since 1909
505 Eighth Avenue, New York, NY 10018
212-594-6900, fax 212-244-0028, aus@auslander.com
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