The state has called for an accounting by the companies and triple damages.
Polaroid sought triple damages, which could have brought the total to $12 billion.
The $1.5 billion represents triple damages based on an estimate of about $500 million in deposits, he added.
The suit seeks triple damages under the Federal anti-racketeering law.
It is also asking for triple damages, lawyers' fees and other legal expenses.
And that is before the triple damages called for in private antitrust suits.
Successful plaintiffs can win triple damages plus their legal fees.
It allows for an award of triple damages and attorneys' fees.
And the law provided for triple damages in such cases.
In the civil lawsuits, courts can award triple monetary damages.