ST. PAUL (AP) — A new state law is designed to give businesses some extra defenses against what some say are excessive lawsuits over alleged violations of the Americans with Disabilities Act.

The law is designed largely to curb the practices of one Minneapolis attorney who's filed more than 160 cases in state and federal courts in three years. Critics say Paul Hansmeier is targeting businesses over minor infractions to make money. But he says his critics have it wrong and he's increasing accessibility for the disabled.

The law provides additional defenses for businesses, and outlines what must be included in letters sent to businesses before a lawsuit begins. The person sending the letter must include the exact violation and can't demand money.