Editor's note: Art. 40 of the 1978 Draft

Article 40 of the 1978 Draft, which the Secretariat Commentary is on, is the counterpart of two CISG articles:

1. Article 40 (1) and (2) became article 42 CISG.

Article 42 CISG
(1) The seller must deliver goods which are free from any right or claim of a third party based on industrial property or other intellectual property, of which at the time of the conclusion of the contract the seller knew or could not have been unaware, provided that the right or claim is based on industrial property or other intellectual property:
(a) under the law of the State where the goods will be resold or otherwise used, if it was contemplated by the parties at the time of the conclusion of the contract that the goods would be resold or otherwise used in that State; or
(b) in any other case, under the law of the State where the buyer has his place of business.
(2) The obligation of the seller under the preceding paragraph does not extend to cases where:
(a) at the time of the conclusion of the contract the buyer knew or could not have been unaware of the right or claim; or
(b) the right or claim results from the seller's compliance with technical drawings, designs, formulae or other such specifications furnished by the buyer.

2. Article 40 (3) became article 43 (1) CISG (article 43 (2) CISG was added during the 1980 Diplomatic Conference).

Article 43 CISG
(1) The buyer loses the right to rely on the provisions of article 41 or article 42 if he does not give notice to the seller specifying the nature of the right or claim of the third party within a reasonable time after he has become aware or ought to have become aware of the right or claim.
(2) [...]