Glendale-based LegalZoom, the online service which provides legal documents to consumers and small businesses, said late Tuesday that it has filed a lawsuit against competitor RocketLawyer. LegalZoom said that the suit alleges false and misleading advertising by RocketLawyer, trademark infringement, and unfair competition. LegalZoom said the lawsuit was filed in the United States District Court for the Central District of California. According to LegalZoom, Rocketlawyer is using false claims that it provides "free" services, but actually requires that users pay filing fees or buy a paid membership plan. LegalZoom said it is seeking "millions of dollars" in damages, but pledged to donate any monetary recovery beyond its attorney's fees and costs to nonprofits providing legal services to the underserved.