Sale of Goods Disputes Under California's Commercial Code (UCC Article 2)

Last updated: November 2026

A UCC breach of contract claim between businesses in California is governed by Division 2 of the Commercial Code, the state's version of UCC Article 2, rather than by general contract law alone. That changes the rules on contract formation, conflicting purchase order and invoice terms, rejection of nonconforming goods, the buyer's and seller's remedies, and the four-year filing deadline. Kolmogorov Law, P.C. litigates sale of goods disputes for buyers and sellers in Orange County, Los Angeles, and across California.

Call (909) 235-6116 or contact us online to discuss a shipment, purchase order, or supply contract that has gone wrong.

When the Commercial Code applies

Division 2 applies to transactions in goods. (Com. Code, § 2102, subd. (a).) Goods are movable things; services and real estate are outside it. For a mixed deal, such as a machine sold with installation, the Code applies to the whole transaction if the sale-of-goods aspects predominate; if they do not, only the Code provisions that relate to the goods aspects apply. (Com. Code, § 2102, subd. (b).)

Formation and the statute of frauds

A contract for goods priced at $500 or more is generally not enforceable unless there is a record, signed by the party being sued, sufficient to show a contract was made. (Com. Code, § 2201, subd. (1).) Between merchants, though, a written confirmation sent within a reasonable time binds the recipient unless it objects in a record within 10 days of receipt. (Com. Code, § 2201, subd. (2).) An unanswered confirming email can be a contract.

The battle of the forms

Most commercial sales are papered with a purchase order from the buyer and an acknowledgment or invoice from the seller, each with its own boilerplate. The forms rarely match.

A definite expression of acceptance operates as an acceptance even though it states additional or different terms, unless acceptance is expressly made conditional on assent to those terms. (Com. Code, § 2207, subd. (1).) Between merchants, additional terms become part of the contract unless the offer limits acceptance to its own terms, the new terms materially alter the deal, or the other side objects within a reasonable time. (Com. Code, § 2207, subd. (2).) And where the writings do not form a contract but both parties perform, there is still a contract, made up of the terms on which the writings agree plus the Code's gap-filling rules. (Com. Code, § 2207, subd. (3).)

The practical result is that a warranty disclaimer, a damages cap, or an arbitration clause buried in one side's form often does not make it into the contract. Whether a term "materially alters" the deal is the usual fight.

How these disputes come up for business owners

A buyer's purchase order says nothing about limitation of liability. The seller's acknowledgment caps damages at the purchase price. The goods fail and the buyer's losses are many times the price.

A distributor receives a container of product, finds a portion out of spec, and holds everything while negotiating a discount. Weeks pass. The seller then says the buyer accepted the goods by keeping them and must pay in full.

Rejection, acceptance, and revocation

If the goods or the tender fail in any respect to conform to the contract, the buyer may reject the whole, accept the whole, or accept some commercial units and reject the rest. (Com. Code, § 2601.) Rejection must occur within a reasonable time after delivery and is ineffective unless the buyer seasonably notifies the seller. (Com. Code, § 2602, subd. (1).)

A buyer may revoke acceptance of goods whose nonconformity substantially impairs their value if it accepted on the reasonable assumption the problem would be cured, or without discovering the defect because discovery was difficult or the seller gave assurances. (Com. Code, § 2608, subd. (1).) Revocation must happen within a reasonable time after the buyer discovers or should have discovered the ground for it. (Com. Code, § 2608, subd. (2).) Warranty claims after acceptance are addressed on our breach of warranty page.

Adequate assurance

When reasonable grounds for insecurity arise about the other side's performance, a party may demand adequate assurance in writing and, if commercially reasonable, suspend its own performance until it receives it. (Com. Code, § 2609, subd. (1).) Failure to provide adequate assurance within a reasonable time, not exceeding 30 days, is a repudiation. (Com. Code, § 2609, subd. (4).)

Remedies for a UCC breach of contract

A buyer facing non-delivery or repudiation may cover by making a reasonable substitute purchase in good faith and without unreasonable delay, then recover the difference between the cover price and the contract price plus incidental and consequential damages. (Com. Code, § 2712, subds. (1), (2).) A buyer who does not cover may recover the difference between the market price when it learned of the breach and the contract price. (Com. Code, § 2713, subd. (1).)

A seller whose buyer refuses the goods may resell them in good faith and in a commercially reasonable manner and recover the shortfall from the contract price. (Com. Code, § 2706.) Where the buyer has accepted the goods, or the goods cannot reasonably be resold, the seller may sue for the price itself. (Com. Code, § 2709, subd. (1).) Our unpaid invoices page covers the collection side.

Any action for breach of a contract for sale must be commenced within four years after it accrues, and the parties may shorten that by agreement to not less than one year. (Com. Code, § 2725, subd. (1).)

Where these cases are heard, and what we do

Sale of goods cases between California businesses are filed in the Superior Court, usually the Central Justice Center in Santa Ana or the Stanley Mosk Courthouse in Los Angeles. Many involve an out-of-state or foreign supplier, which can bring the case into the Central District of California or raise the question of which country's sales law applies; our international disputes page addresses that.

We start with the paper trail: the quote, the purchase order, the acknowledgment, the shipping documents, and the emails around delivery. From those we can usually tell which form governs and whether the notices were timely.

What to bring to the first meeting

Bring every document exchanged for the sale, including the terms and conditions each side relies on. Add the delivery records, inspection reports, photographs, and the notices of rejection or defect. Bring evidence of cover purchases or resale efforts, and a summary of the amounts at stake.

Frequently asked questions

What is a UCC breach of contract claim?

It is a breach of contract claim for a sale of goods, governed by Division 2 of the California Commercial Code. The Code supplies rules on formation, conflicting forms, rejection, revocation, and damages that differ from general contract law. (Com. Code, § 2102.)

What is the battle of the forms?

It is the problem of a purchase order and an acknowledgment with conflicting boilerplate. Under Commercial Code section 2207, the acceptance still forms a contract, and between merchants additional terms join the contract unless they materially alter it, the offer barred them, or the other side objects. (Com. Code, § 2207, subds. (1), (2).)

How long does a buyer have to reject defective goods in California?

A reasonable time after delivery, with seasonable notice to the seller. (Com. Code, § 2602, subd. (1).) There is no fixed number of days. Silence while the goods sit in a warehouse is usually treated as acceptance.

Does a sale of goods contract have to be in writing?

Generally yes, for goods priced at $500 or more, unless an exception applies. (Com. Code, § 2201, subd. (1).) Between merchants, a confirming record that goes unanswered for 10 days satisfies the requirement. (Com. Code, § 2201, subd. (2).) Emails and electronic records can qualify.

What is the statute of limitations for a sale of goods dispute?

Four years from when the cause of action accrues. (Com. Code, § 2725, subd. (1).) The parties may shorten that period in the original agreement to as little as one year, and many supply contracts do.

Talk to a California breach of contract attorney

If a sale of goods has turned into a dispute over conforming product, payment, or conflicting terms, call (909) 235-6116 or contact us online. Kolmogorov Law, P.C. is located at 327 Magnet, Irvine, CA 92618, and represents businesses in Orange County, Los Angeles, and throughout California.

This page provides general information about California law and is not legal advice. Outcomes depend on the documents exchanged, the timing of notices, and the court.