“Finders keepers, losers weepers.”

Pfizer, the maker of the well known drug Viagra, has sued a former company executive in an attempt to recover $411,288.49 of a half-million-dollar severance check that it issued in error – a mistake most fired employees can only dream about.

Pfizer Vice President Janet Rodriguez, 54, of New York received a severance check worth $517,140.24 on March 31, 2010 after being laid off in December 2009, following 16 years at the company.

About 3 months later, the manufacturer – with projected revenues this year of $66 billion – claimed to have made a big mistake, reported the NY Post.

The company sent out four letters and hired a collections agency in an effort to recover $411,288.49 from Rodriguez, who ignored the Company’s request. Pfizer filed a lawsuit in Manhattan Supreme Court last week.

“By virtue of the fact that they bring this claim so late in the game, so long after their alleged mistake, [it] is just a cheap bullying tactic that we expect the court to see right through,” said her lawyer, Saul Zabell.