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• #### Untangling the Patent Thicket Literature ﻿

(2015)
At least 164 papers have defined a ‘patent thicket’ since the first mention of the term in 1988. There is no canonical definition. Instead authors use the term to refer to various combinations of seven different underlying economic issues. An average paper in 2001 used a definition based on 1.2 of these issues, and the complexity of definitions grew ...