As legal battles over transgender rights rage in courtrooms across the country, one case stands out among the pack for its unique and potentially game-changing legal strategy: Blatt v. Cabela’s.

In that case, attorney Neelima Vanguri, of Sidney Gold and Associates in Philadelphia, was the first lawyer in the country to argue that a company can violate the Americans with Disabilities Act by denying a transgender person use of a bathroom that corresponds with the gender they identify with.