Defense Procurement

Defense Equipment Contracts

What is the seller's core obligation?

Transfer of ownership, delivery of documents and handover of the goods at the agreed price.

When can the whole contract be avoided?

Where one failed delivery creates a real threat that future deliveries will also fail.

Who guarantees against defects?

The seller cures or replaces the item and bears the costs, unless cure is disproportionately expensive.

5 min·8 Feb 2026

The Legal Basis of Defence Equipment Supply Contracts

A defence equipment supply contract — for systems, components or materials — stands, in legal terms, on the sale chapter of the Civil Code, and it is those norms that define the parties' rights and obligations at every stage of delivery: from order and conclusion through dispatch to the cure of defects. The defence dimension of the relationship is regulatory, not contractual: the military-product export permit and the manufacturing licence condition the delivery, but the relationship between supplier and buyer is ordinary sale law. Where the customer is a state body, the administrative-contract form is added — but that is a separate regime; below we explain the civil-law machinery on which every supply contract rests.

The Concept of the Contract and the Price — Article 477

Under a contract of sale the seller is obliged to transfer to the buyer the right of ownership in the property, the documents connected with it, and to deliver the goods; the buyer is obliged to pay the agreed price and to take delivery of the property purchased. Where the price is not directly indicated in the contract, the parties may agree on the means of its determination — a detail of particular importance in equipment supply, where the price often rests on a complex formula of indexation, currency and configuration, and where fixing the determination mechanism precisely protects the parties from later dispute. The duty to hand over documents is no mere formality: without technical documentation, the operation and subsequent servicing of equipment is frequently impossible, so the scope of the documentary package should be defined as carefully as the goods themselves.

Dispatch, Instalment Delivery and Defects

On dispatch, a seller who hands the goods to a carrier must, where the goods are not distinctly marked for the buyer, notify the buyer of the dispatch and send a detailed schedule of the cargo; where the seller is obliged to send the goods, it must conclude the contracts necessary for carriage to the agreed place on the usual conditions; and a seller not obliged to insure the cargo in carriage must, at the buyer's request, hand over all information in its possession necessary for concluding the insurance contract. In instalment delivery, if the non-performance of a single obligation of one party creates a real threat that future deliveries will also not be performed, the other party may avoid the contract as a whole — the norm that addresses the typical risk of defence supply, where a slip in the schedule undermines an entire programme. The defect regime is this: for a defective item the seller must either cure the defect or, in the case of a generic item, replace it within the period necessary for the purpose; the seller bears the costs of cure, including the costs of carriage, route, work and materials; the seller may refuse cure or replacement if this would require disproportionately large expenses; and where a defect-free item was handed over for cure, the seller may demand the return of the defective one. The buyer may seek avoidance of the contract because of the defect, and the seller must reimburse the buyer's expenses.