According to the market sources, it was revealed that Idea Cellular Ltd. (IDEA), the mobile-phone company which is owned by Indian billionaire, Kumar Mangalam Birla has fallen the most in two weeks in Mumbai trading after a court ruled against the company that the company must return overlapping licenses which were obtained from an acquisition three years ago to the government.

It was observed that Idea has lost 4.9 percent to 75 rupees, which is the biggest intraday decline since June 22, before trading at 76.75 rupees as of 1:35 p. m. on the Bombay Stock Exchange. India's benchmark Sensitive Index has decreased by 0.5 percent.

In July 2008, the Mumbai-based company has bought a controlling stake in Spice Communications Limited, an Indian mobile-services provider.

Yesterday, Idea told in the e-mail that the New Delhi High Court has affirmed the acquisition and also have ordered the overlapping Spice mobile-services licenses to be returned. The company has also said that the overlapping licenses are non-operational, with no attached subscribers.

The shares of the company have opened on a weak note at Rs 77, which then dropped and touched a low of Rs 75. The company was trading at Rs 76.50, decreased by 2.80 per cent at 10:57 hours on the BSE.

It was reported that the court has also slapped a fine of Rs 1 crore on the company for not providing the correct information to the court.