Law Commons^™

Invalidated Patents And Associated Patent Examiners, Shine Tu

Law Faculty Scholarship

This study attempts to determine whether there are common

characteristics between examiners who issue invalidated patents. This

study uses two new patent databases that code for nearly 1.7 million

patents and approximately one thousand patents that were litigated to

a 'final" judgment between 2010 and 2011. This study finds that

approximately one-third of patents that are litigated to final judgment

are found invalid. Most invalidated patents are found in technology

centers 1600, 2600, and 2700, which correspond to biotechnology and

organic chemistry, communications, and computer science, respectively.

Most patents are invalidated on prior art-type novelty and obviousness

grounds. This study …