There is no automatic extension as there is for tax returns.

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The complete return was delayed because investment information required to prepare it wasn't available by April 15, and the Romneys got an automatic extension from the Internal Revenue Service.

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If you need more time, you can request an additional four month extension by filing federal form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return (downloads as a pdf) by June 15.

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This week the White House moved to halt some of these antics by proposing regulations that would limit pharmaceutical firms to a single automatic 30-month extension on their patents when challenged by a generic rival, and prevent them from prolonging their monopolies with frivolous patents.

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The extension used to be an automatic four months, with two more thereafter if you had a good reason.

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