Independent and Dependent Claim Types

The claims in a patent define the scope of the invention and therefore set the parameters for the right to exclude others from making, using or selling in the United States or importing into the United States.1 Every nonprovisional patent application must 

The Chemist s Companion Guide to Patent Law, by Chris P. Miller and Mark J. Evans Copyright 2010 John Wiley Sons, Inc. 

A compound having the structure of formula I (independent claim)  

Yis selected from hydrogen, Ci 6 alkyl, phenyl, or OH and Z is selected from hydrogen or halogen. 

The compound according to claim 1 wherein formula I is dependent from claim 1)  

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