Mumbai, March 14 -- Six months after steel magnate Naveen Jindal made an unsolicited bid to acquire the steel assets of Germany's Thyssenkrupp AG, the two sides have hit an impasse over three key sticking points, according to two people familiar with the matter.

Jindal Steel International, the Indian bidder, is seeking clarity on the pension liabilities and retrenchment costs it would inherit with the asset. The company also wants to know how much fiscal support the German government would provide to help fund the transition from blast furnace-based steelmaking to relatively cleaner operations, in line with support extended by other European governments to their domestic steelmakers. However, Thyssenkrupp first wants Jindal to disclose i...