Jan 9 (Reuters) - Thousands of companies around the world have filed lawsuits challenging U.S. President Donald Trump's sweeping tariffs and sought refunds on duties paid. The U.S. Supreme Court may release ​opinions in argued cases on Friday. The court does not announce ahead of time which ‌rulings it intends to issue. Any decision on tariffs will focus on the legality of levies on goods imported from several trading partners, ‌including China, India and Brazil, that Trump has imposed by invoking a 197 ...