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Prior Art and Its Uses: A Primer, by Theodore C. McCullough (Groklaw)

Groklaw presents Prior Art and Its Uses: A Primer, by Theodore C. McCullough. "The question of what constitutes prior art can be confusing, to say the least. Moreover, the issue of when one can and cannot use a particular type of prior art in attacking the patentability of a particular invention is equally confusing. The following is a high-level outline of the some of the key concepts regarding what constitutes prior art, and how to apply it to address the patentability of an invention. The purpose of this primer is not to serve as formal legal advice, nor should it be considered as such. Rather, the purpose of this primer is to assist the general public, including those in the Open Source Community, with helping to improve patent quality."
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