The Dervaes Institute is claiming broad ownership rights over the term "urban homesteading"—a commonly used phrase to describe a social movement dedicated to achieving more self-sufficient, sustainable living in cities—and is sending takedown requests and warning letters targeting individuals and organizations that have been using the term for years. Even assuming the Dervaes Institute’s trademark registration is valid, the term has a popular meaning that anyone is free to use in a descriptive sense, which is exactly what the takedown targets did.