7 Moore's Federal Practice - Civil § 33.79

Summary

Interrogatories may not pose questions when the answers would involve a statement of pure law.1 Interrogatories involving pure law are those that call for “legal issues unrelated to the facts of the case.”2

Despite the rule precluding interrogatories requiring answers based on pure law, an interrogatory may be permissible when it seeks out the facts underlying vague and general allegations of a complaint, even though it calls for a legal conclusion.3