Pioneers, Submariners, or Thicket-builders: Which Firms Use Continuations in Patenting?
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The continuations procedure within the U.S. patent system has been criticized for enabling firms to manipulate the patent review process for strategic purposes. Changes during the 1990s in patent procedures affected the incentives of applicants to exploit the continuations process, and additional
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美国国家经济研究局创建时间：
2007-06-01
