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anticipatorily avoided. If the installments are interdependent, a fundamental breach of one
installment will allow a party to avoid the entire contract.
Damages
Article 74 states: Damages for breach of contract by one party consist of a sum equal to the loss,
including loss of profit, suffered by the other party as a consequence of the breach. Such damages
may not exceed the loss which the party in breach foresaw or ought to have foreseen at the time
of the conclusion of the contract, in the light of the facts and matters of which he then knew or
ought to have known, as possible consequence of the breach of contract.
To calculate the damages, the convention uses two different rules. First, if an avoiding party has
entered into a good-faith substitute transaction—the buyer obtaining substitute goods or the seller
reselling the goods to another party—then damages are measured by the difference between the
contract price and the price received in the substitute transaction.
Alternatively, if the avoiding party did not enter into a substitute transaction, then the damages
are calculated by taking the difference between the contract price and the current price at the time
of avoidance. The current price is defined as “the price prevailing at the place where delivery of
the goods should have been made or, if there is not current price at that place, the price at such
other places as serves as a reasonable substitute.”
The party claiming damages is under an obligation to take reasonable measures “to mitigate the
loss.” If the claiming party fails to take such action, the other may seek a proportionate reduction
in the damages.
Excuses for Nonperformance
Two excuses are provided in CISG for a party’s failure to perform. One is force majeure; the
other is dirty hands.
Force Majeure – A party is not liable for any damages resulting from his failure to perform if he
can show that:
his failure was “due to an impediment beyond his control,”
the impediment was not something he could have reasonably taken into account at the time of
contracting, and
he remains unable to overcome the impediment or its consequences.
This excuse, commonly known as force majeure, applies to situations—such as natural disasters,
war, embargoes, strikes, breakdowns, and the bankruptcy of a supplier—that frustrate both the
party attempting to perform and the party expecting performance. Because neither party is really
at fault, the breaching party is excused from paying damages. He is not, however, exempted from
the application of any other appropriate remedy.
A party seeking to use CISG’s excuse of force majeure is under some additional limitations:
He/she has a duty to promptly notify the other party of “the impediment and its effect on his
ability to perform.”
If his/her claim is based on the failure of a third person to perform (such as a supplier), the
third party must itself be able to claim the excuse.
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