A new wave of litigation focused on violations of municipal regulations is emerging against multifamily housing landlords, many of whom are facing antitrust litigation targeting their use of certain revenue management products. The new regulations may potentially provide a simpler path to liability and the possibility of significant penalties.  Following federal, state, and private litigation targeting RealPage, Yardi, and landlords that allegedly used revenue-management products, states and municipalities across the country have enacted laws restricting the use of algorithms or price optimization software to share or recommend rents, concessions, lease terms, or occupancy levels.…