Portal:Law/Selected anniversaries/April

• April 3, 2000 – 2000 – United States v. Microsoft Corp.: Microsoft is ruled to have violated United States antitrust law by keeping "an oppressive thumb" on its competitors.
• April 8, 1895 – In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.
• April 10, 2009 – President of Fiji Ratu Josefa Iloilo announces the abrogation of the constitution and assumes all governance in the country, creating a constitutional crisis.
• April 17, 1905 – The Supreme Court of the United States decides Lochner v. New York, which holds that the "right to free contract" is implicit in the due process clause of the Fourteenth Amendment to the United States Constitution.
• April 20, 1818 – The case of Ashford v Thornton ends in the UK, with Abraham Thornton allowed to go free rather than face a retrial for murder, after his demand for trial by battle is upheld.
• April 21, 1993 – The Supreme Court in La Paz, Bolivia, sentences former dictator Luis García Meza to 30 years in jail without parole for murder, theft, fraud and violating the constitution.
• April 23, 1935 – The Polish Constitution of 1935 is adopted.
• April 25, 1938 – U.S. Supreme Court delivers its opinion in Erie Railroad Co. v. Tompkins and overturns a century of federal common law.
• April 27, 1994 – South African general election: The first democratic general election in South Africa, in which black citizens could vote. The Interim Constitution comes into force.