What You Need To Know About Serial Challenges At PTAB

Law360 (April 4, 2018, 9:39 PM EDT) -- While patent owners have long feared that serial attacks at the Patent Trial and Appeal Board give petitioners an unfair advantage, the numbers show repeated patent challenges are not widespread. But that doesn't mean there is nothing to worry about, and companies are expected to test the boundaries of what is acceptable.

The threat that a patent will be challenged over and over again with new petitions has historically been among the main concerns of patent owners, who complain it is unfair for petitioners to get multiple cracks at invalidating a patent at the PTAB.

What hasn't always been clear is how often...

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