Ruth Marianna Handler (née Mosko; November 4, 1916 – April 27, 2002) was an American businesswoman and inventor. She served as the president of the toy manufacturer Mattel Inc., In 1959 she invented the Barbie doll, which sold over a billion copies worldwide. She was the founder and president of the world's largest toy company, which at its peak had 18,000 employees and annual sales of over $300 million. She was active in public service and won many awards. In 1974 the Handlers were forced to resign from Mattel, and in 1978 Ruth Handler and four others were convicted in federal court of conspiracy, mail fraud, and false reporting to the Securities and Exchange Commission.