What are the potential defenses that can be raised against a claim for attorney's fees as compensation for litigation damages?

The defenses can include challenging the validity of the fee agreement, denying delay and abuse of process, arguing that litigation fees are not considered a compensable damage but rather a discretionary expense, asserting that reliance on customary rules applies only in the absence of a contract with complete essential elements, or that the assessment must be carried out in accordance with the relevant statutory provisions.