Uniform Commercial Code (UCC): Primary source of commercial law for the sale of goods in the United States, particularly Article 2 which governs sales transactions

Common Law Contract Principles: Fundamental principles governing service contracts and other non-goods agreements, based on judicial precedents

Restatement (Second) of Contracts: Authoritative treatise summarizing common law principles of contracts, widely cited by courts

Federal Arbitration Act: Federal law governing arbitration provisions in contracts, ensuring their validity and enforcement across state lines

E-SIGN Act: Federal law establishing legal validity of electronic signatures and records in commercial transactions

Magnuson-Moss Warranty Act: Federal law governing warranties on consumer products, requiring clear disclosure of warranty terms

State Contract Laws: Specific contract regulations and requirements that vary by state jurisdiction

Statute of Frauds: Legal doctrine requiring certain types of contracts to be in writing to be enforceable

State Consumer Protection Laws: State-specific laws protecting consumers from unfair or deceptive business practices

Contract Formation Requirements: Essential elements including capacity to contract, consideration, mutual assent, and legality of subject matter