Wash. Rev. Code § 19.350.020
(2) A court may consider the following nonexclusive factors as evidence that a person has made an assertion of patent infringement in bad faith:
(a) The demand does not contain:
(4) A court may consider the following factors as evidence that a person has made an assertion of patent infringement in good faith:
(b) The person has:
(c) The person has:
(e) The person is:
(5) Unless done in bad faith, nothing in this section may be construed to deem it an unfair or deceptive trade practice for any person who owns or has the right to license or enforce a patent to:
[ 2015 c 108 s 3.]