GO Corporation, founded in 1987 by Jerry Kaplan, was an early pen-computing pioneer whose PenPoint operating system collapsed amid competition from Microsoft's rival Pen Windows. In his memoir 'Startup' and in a later lawsuit, Kaplan alleged that Microsoft had obtained GO's confidential technology under the guise of a partnership and used it to build its competing product, helping doom the company. Kaplan filed an antitrust suit against Microsoft in 2005; Microsoft denied wrongdoing, and the courts ultimately dismissed the case as barred by the statute of limitations, a ruling affirmed by the Fourth Circuit in 2007. The dispute remains a frequently cited account of how Microsoft was accused of crushing smaller innovators during Gates's tenure.