Maryland Code, Commercial Law § 22-114

(a) Unless displaced by this title, principles of law and equity, including the law merchant and the common law of this State relative to capacity to contract, principal and agent, estoppel, fraud, misrepresentation, duress, coercion, mistake, and other validating or invalidating cause, supplement this title.  Among the laws supplementing and not displaced by this title are trade secret laws and unfair competition laws.

(b) Every contract or duty within the scope of this title imposes an obligation of good faith in its performance or enforcement.

(c) Whether a term is conspicuous or is unenforceable under § 22-105(a) or (b) or § 22-111 of this subtitle or § 22-209(a) of this title and whether an attribution procedure is commercially reasonable or effective under § 22-108 of this subtitle or § 22-212 or § 22-213 of this title are questions to be determined by the court.

(d) Whether an agreement has legal consequences is determined by this title.

(e) Whenever this title requires any action to be taken within a reasonable time, the following rules apply:

(f) A person has reason to know a fact if the person has knowledge of the fact or, from all the facts and circumstances known to the person without investigation, the person should be aware that the fact exists.