A partnership firm not registered with the Registrar of Firms under the Indian Partnership Act, 1932 can:

An unregistered firm can sue to enforce an independent common-law right, such as the right to restrain passing off. Section 69(2) principally bars its suits against third parties to enforce rights arising from contract. A procedural route under Order XXX does not remove that substantive bar, and merely having a meritorious contractual claim is insufficient.