Comcast v. Behrend held that a damages model must measure damages resulting from the particular antitrust injury on which liability rests. Courts have applied the principle across claim types with varying rigor.
The fit requirement is analytically distinct from reliability.
Alternative Names:
Comcast Objection|Damages Fit Challenge
Why it Matters?
Fit is distinct from reliability, which means a methodologically sound model still fails if it measures damages from conduct beyond the certified theory, and that argument does not require attacking the expert's competence. Where multiple theories were pleaded and only some certified, the model built for the full complaint frequently overreaches. Identifying that mismatch is a cleaner argument than a methodology attack.
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Frequently asked questions
How does fit differ from reliability?
When does the mismatch arise?
