Bloomberg reports that Vodafone Group has filed a potation in the Bombay High Court against the Indian tax department, related to its 2007 purchase of a majority stake in Vodafone Essar. It was said that the tax authorities are now taking a different approach to the matter, treating Vodafone as an agent of the seller (Hutchison Whampoa), whereas it had previously said it was Vodafone’s own responsibility to withhold tax on the transaction. Vodafone has said that because the transaction involved two foreign companies, the tax demand is not valid.