The right of set-off is exercised by notice to the other party.

行使抵销权时，应该通知另一方当事人。

youdao

The new obligor may not exercise against the obligee any right of set-off available to the original obligor against the obligee.

新债务人不能够向债权人主张原债务人可以向债权人主张的抵销权。

youdao

The obligor may exercise aaccretionst the assignee any right of set-off accessible to the obligor against the assignor up to the time notice of assignment was accustomed.

债务人在收到转让通知时，可向让与人主张的任何抵销权，都可以向受让主张。

youdao

But in April 2009 the U.S. told Tronox that the DOE had frozen those funds pending discussions about the right of the U.S. to set off the Title X reimbursement against its pre-petition claims in the Tronox bankruptcy.

FORBES: Bankruptcy Judge Scolds Latham Attorney Over Disclosure Of Fee