Hatch also took on pharmaceutical companies. In 2002, he filed a lawsuit against Pharmacia Corporation, making Minnesota one of the first states to sue a drug company for defrauding patients and Medical Assistance by quoting "average wholesale prices" that did not reflect the prices insurers actually paid the pharmaceutical company for its drugs. In 2003, he filed lawsuits against several more drug companies alleging that they misrepresented the prices of inhalers for asthma patients by up to seven times the true cost.