Dennis Kozlowski, the imprisoned former chief executive of Tyco International, was ordered by a judge to forfeit seven years of pay after looting the company, a sum that could exceed $100 million.

US District Judge Thomas Griesa also rejected Kozlowski’s request for tens of millions of dollars of benefits he said Tyco owed him, including a lump sum payout estimated at $75.9 million as of October 2008.

Kozlowski, 64, is serving an 8-1/3 to 25-year prison term in New York. His ability to satisfy Griesa’s forfeiture ruling is unclear. The lawsuit began in 2002.

Tyco sued Kozlowski to recover $505.8 million of benefits it said it awarded him between 1995 and 2002. Griesa upheld some of Tyco’s claims and denied others, and dismissed nearly all of Kozlowski’s counterclaims.