Bloomberg Halliburton Co. isn’t content to limit its battle for market share with Schlumberger Ltd. to the oil field these days. It’s opened a new front in an unlikely place: the patent office. The Houston-based provider of drilling services is waging an aggressive campaign to persuade the US Patent and Trademark Office to cancel some of Schlumberger’s fracking-related patents, telling …

Bloomberg Oil slid to a two-week low and headed for its longest losing streak in two months as a plunge in US equities dragged other markets lower. Crude futures in New York fell a third day, sliding as much as 1.3 percent. Stock indexes from Japan to Germany tumbled on Tuesday after a frantic sell-off in US shares sent the …

Bloomberg India’s lenders, already struggling with $210 billion of stressed assets, may have to prepare for another hit as early as the coming financial year if new accounting norms kick in as planned on April 1. The IndAS — based on the IFRS9 standards created in the aftermath of the financial crisis — would require banks to make provisions for …