A French court on Friday allowed an auction house to go forward with the sale of 25 sacred Hopi Indian artifacts despite a legal battle initiated by the Native American tribe, which says that the masklike objects were stolen and that selling them is a sacrilege.

The masks are to be sold Monday by the Eve auction house as part of a sale of 66 Native American artifacts. Last month the tribe — represented by its French lawyer, Pierre Servan-Schreiber — took the auction house to court to try to prevent the sale of the artifacts, which the tribe believes are imbued with divine spirits. It was the second unsuccessful effort by the tribe to block a sale.

In April Mr. Servan-Shreiber took legal action against Tessier, Sarrou & Associés, another auction house, which had put 70 similar Hopi artifacts on sale. That auction went forward and generated more than $1 million in sales, despite protests and an appeal from Charles Rivkin, the United States ambassador to France, to delay the sale.

On Friday, the Eve auction house said: “American law doesn’t forbid the sale of items coming from Indian tribes when they are in the hands of private owners.” The French legal authorities say the sale is legal because, despite their religious value to the tribe, the items are not associated with human remains or living beings in France.