The High Court justice IP Mukherjee directed Tata Motors to remove all its articles within two months. The Tatas can apply for compensation before the Hooghly district judge within six months.
The act was introduced in June by Mamata Banerjee after she became West Bengal chief minister. It allowed her government to cancel a 99-year-lease signed with Ratan Tata for nearly 1000 acres for his Nano factory.
The deal was signed by the Left which lost to Banerjee in the state elections in May this year. Ratan Tata had challenged the Singur Act. He is expected to appeal against today's order in the Supreme Court.