A Grand Canyon concessionaire is seeking to take control of the names of the park’s famous historic lodges, which have become an iconic part of perhaps the most famous geological formation in the world.

A concessionaire has applied to trademark the names of 20 popular lodges in the park, including the Phantom Ranch, Bright Angel Lodge, and El Tovar properties, which provide spectacular views of the canyon and the waters that run through it, according to an Associated Press report.

Xanterra Parks & Resorts would be able to charge future concessionaires with the right to use the names of those properties, or simply withdraw the names altogether, forcing them to be renamed.

The National Park Service is weighing its response to the filing, as it is a problem the agency hasn’t encountered before. A Park Service spokesman said he only knew of two other parks where companies had attempted to trademark names: Yosemite in California and Hot Springs in Arkansas.

Xanterra’s contract to manage hotels, restaurants, and mule rides in the South Rim expired in December, although it won a temporary contract and will be able to bid on a new one sometime this year.

Some of the properties have been around since before the Grand Canyon was named a national monument and then a national park, including the El Tavor Hotel, which overlooks the famous park.

Xanterra is likely seeking the trademarks in order to block competition for future contracts by providing the implicit threat that if it doesn’t get the contract, it may charge a fee for using the names or yank them altogether, according to the report. They did not comment to the Associated Press.

While the Park Service isn’t sure yet whether it would oppose Xanterra’s bid, it does intend to include language in future contracts that will stipulate how names and logos associated with the park can be used. Yosemite National Park has already done this after it went through its own battle.

A National Park Hospital Association counsel said that park concessionaires deserve to have the rights to the names, as they have spent the time and money to build up their goodwill with those names, and it happens at hotels and businesses outside of the parks, according to the report.