While drafting the patent claims, one needs to consider the scope, characteristics, and structure of the claims. Claims include independent claims and dependent claims, where all the independent claims should be presented covering the broadest scope of the invention in light of the specification.

Earlier we had dealt with a broader classification of patent claims. It was largely based on dependency where Independent and dependent claims were dealt with. Various schools of thought have classified patent claims based on numerous criteria. The subject matter based classification had been introduced to study the ambit of improvisation and innovation through a meticulous analysis of the patent claims.