Craig v. Boren

They have a close confidential relationship with their patients, and the patients face severe privacy obstacles and mootness issues in bringing a lawsuit themselves.

Another famous example is Craig v. Boren, where a bartender was allowed to assert the equal protection rights of young men who were forbidden from buying beer that young women were allowed to buy.

Right.

The bartender suffered an economic injury from lost sales and could effectively advocate for the customers.