The move may put an end to a complex prolonged court case between the two. Apple filed a copyright infringement suit against Psystar in July 2008, starting the back-and-forth legal battle. The trial was set to begin on 9 November 2009.
The bankruptcy filing may be an indication that the company's financial backers have pulled out, signalling they see Apple as the clear winner in court suggests the Mac Observer who appear to have broken the story yesterday.
Any legal proceedings between the two will now be put on hold while the bankruptcy court begins its proceedings.
Psystar workers confirmed the bankruptcy and the filing looks likely to have been made last Thursday.
In a series of filings Psystar blamed the economy for its financial problems.
Psystar claimed 1-49 creditors with assets of $0 to $50,000. Liabilities were $100,001 to $500,000.