(KRON) -- A court ruled on Tuesday that the Oakland airport must stop using its new name, the "San Francisco Bay Oakland International Airport." The Port of Oakland opted to change the name in April to include the words "San Francisco Bay" to increase the visibility of the airport, claiming that travelers did not know Oakland was located in the Bay Area. The City of San Francisco did not like that, suing the Port of Oakland and City of Oakland. On Tuesday, a court ruled in favor of San Francisco. Airport-Court-Documents-1Download "The Port has taken San Francisco’s valuable Mark and applied it to a smaller, less successful, and lower rated airport," court documents read. "Accordingly, San Francisco will suffer irreparable harm if a preliminary injunction is not issued." SFO submitted evidence that 15 travelers went to SFO when they meant to go to the Oakland Airport, according to court documents. Some Instagram users tagged the Oakland airport in pictures of SFO as well. Southwest flight from San Jose makes emergency landing after engine trouble San Francisco filed the lawsuit in April, right after the Port of Oakland decided to go forward with the name change. The court's ruling on Tuesday mandates that the airport stop using the name everywhere, including advertisements, marketing, and promotion.