Feb. 4 (Bloomberg) — McGraw Hill Financial Inc.'s Standard & Poor's unit asked a judge to throw out California's claims the company violated false-advertising and business practices laws in rating mortgage-backed securities as the state seeks an award of at least $3 billion.

California Attorney General Kamala Harris can't sue the company under state laws covering that conduct because the statutes don't apply to securities transactions, Melvin Goldman, S&P's lawyer, said in filings yesterday in state court in San Francisco. Other claims in the state's lawsuit also were filed too late, he said. Nick Pacilio, Harris's spokesman, had no immediate comment on the filing.

The California suit is one of more than a dozen brought against S&P by the U.S. and a group of states over ratings on mortgage-backed securities during the housing boom. The U.S. Justice Department last year accused S&P of lying about its ratings being free of conflicts of interest and may seek as much as $5 billion in civil penalties for losses to federally insured financial institutions that relied on the company's investment- grade ratings for mortgage-backed securities and collateralized- debt obligations, or CDOs.