(1) A defendant in an action involving public petition and participation may maintain an action, claim, cross-claim, or counterclaim to recover damages, including costs and attorney's fees, from any person who commenced or continued such action. Costs and attorney's fees may be recovered upon a demonstration that the action involving public petition and participation was commenced or continued without a substantial basis in fact and law and could not be supported by a substantial argument for the extension, modification, or reversal of existing law. Other compensatory damages may only be recovered upon an additional demonstration that the action involving public petition and participation was commenced or continued for the purpose of harassing, intimidating, punishing, or otherwise maliciously inhibiting the free exercise of petition, speech, or association rights.
(2) The right to bring an action, claim, cross-claim, or counterclaim under this section may be waived only if it is waived specifically.
(3) Nothing in this section shall affect or preclude the right of any party to any recovery otherwise authorized by common law or by statute, rule, or regulation.