Wadia, who has been accused of siding with ousted Tata Group chairman Cyrus P Mistry, filed the defamation suit in the court of additional chief metropolitan magistrate here.
Tata Sons' special resolution to shareholders seeking Wadia's removal as independent director on board of Tata Chemicals, Tata Motors and Tata Steel has "caused severe prejudice to the reputation and goodwill", the chairman of Britannia Industries said in the suit.
He named Anil Naik, Chairman of Larsen & Toubro and Tanya Godrej Dubash, Executive Director of Godrej Group, as witnesses.
Others named as witness include Subhodh Bhargava, independent director of Tata Motors and Tata Steel and Vinesh Jairath, independent director at Tata Motors.
Wadia is said to have previously filed a defamation case in Bombay High Court seeking Rs 3,000 crore damages.
It is not immediately known what fate that case has met and why this case before the additional chief metropolitan magistrate was filed.
Besides Ratan Tata, who was brought back as Chairman of Tata Sons after Mistry was abruptly removed on October 24, the others named in the suit include the holding company's directors Ajay G Piramal, Amit Ranbir Chandra, Ishaat Hussain, Nitin Nohria, Vijay Singh, Venu Srinivasan, Ralf Speth, N Chandrasekaran and Ranendra Sen.
After removing Mistry as head of Tata Sons -- the holding company of the USD 103 billion salt-to-software Tata Group -- the promoters have sought to remove him from boards of operating companies.
Wadia, who has openly sided with Mistry, too is being sought to be removed from boards of Tata Motors, Tata Steel and Tata Chemicals, where he is an independent director.
In the complaint, Wadia alleged that the accused had
"committed the offence of defamation" by printing, publishing and circulating "per se false, frivolous, baseless, incorrect, libellous and defamatory material" with the "sole intention of lowering, tainting, tarnishing" his reputation.
The complaint said the accused are persons who are on the board of Tata Sons and are responsible for the contents of the notices which are defamatory.
"It is thus clear that Tata Sons is the principle offender who has committed the offence of defamation along with F N Subedar, while the board members of Tata Sons (excluding Mr Cyrus Mistry and Miss Farida Khambatta) have/share common intentions and/or abetted the offence by actively participating in the same...," the petition said.
