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AstraZeneca sues Sun Pharma in us court
Sun had challenged the patent on Nexium IV in the US market. Multinational drug maker AstraZeneca has sued Sun Pharmaceuticals Industries for challenging the patent on its ulcer drug brand, Nexium IV, in the US market. Patent experts said the UK-based drugmaker filed two lawsuits against Sun Pharma and its US subsidiary on February 26 in a federal court in Trenton, New Jersey, and on March 1 in Detroit,