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Josef Šťáva, born on 17 March 1950 in Prague, is a Swiss and Czech entrepreneur, notably active in the medical sector. He is the founder and owner of blood plasma trading company Diag Human and owns Bechyně Castle, a major Czech touristic attraction.

Diag Human

Josef Šťáva created in the 1980s the blood plasma company Diag Human, which specialized in the blood plasma business.

The company gained media interest in 1990's, after it filed a complaint against the Czech government for illegally cancelling a tender won by Diag Human.

The Diag Human case, as it has been publicized in the Czech Republic, has not yet been settled and is one of the largest cases of commercial litigation in the history of Czech Republic.

According to Ernst & Young, the Czech state should pay between CZK 2.5 billion and CZK 4.6 billion to Human Diag. This estimation was denied by the Czech Republic.
