For a preliminary injunction to be proper, the harm to the plaintiff must be judged irreparable, meaning not fully compensable or avoidable by the issuance of a final judgment in the plaintiff's favor.
The court applied the preliminary injunction test:
The likelihood of confusion seemed substantial, and the risk to Kraft of the loss of valuable goodwill and control was palpable.
Irreparable harm is especially likely in a trademark case because of the difficulty of quantifying the likely effect on a brand of a nontrivial period of consumer confusion.
The court considered the consumer interest in having a variety of products to choose from but balanced it against the potential for consumer confusion.
The court noted that weighing and balancing competing interests with any precision are not feasible undertakings in a preliminary-injunction proceeding.
The injunction should be issued if the plaintiff has a strong likelihood of prevailing in the full trial, and the costs to him if the preliminary injunction is denied are at least as great as the costs to the defendant if it is granted, and the plaintiff's costs could not be fully recouped by him in a final judgment in his favor.