Birmingham-based Wragge & Co's advertising and marketing law team has won a victory for Birds Eye over complaints made to the Advertising Standards Authority.
These concerned an advertising campaign featuring Birds Eye's omega 3 fish fingers.
Sustain, the alliance for better food and farming, and two individuals, brought the complaints before the ASA. None were upheld.
IP associates Carlton Daniel and Kate Swaine advised Birds Eye. They worked alongside Anthony Barratt, group legal counsel at Birds Eye.
Mr Daniel said: "The omega 3 and 'Good Mood Food' claims are essential to Birds Eye's advertising strategy. By securing these positive decisions, the client can continue to use its promotional claims with full confidence."
Mr Barratt said: "This is a great result for us."
The rows concerned magazine and television adverts - said to be misleading.
The complainants did not believe the fish used to make Birds Eye fish fingers contained a significant amount of omega 3.
They also claimed that the strap line 'Good Mood Food' was misleading because it implied that the product could benefit the mental health of a child.
The ASA found that evidence sent by Birds Eye proved that their fish fingers did contain a significant amount of omega 3, above the level European Regulations suggested was required.
The ASA also found that 'Good Mood Food' did not imply that omega 3 fish fingers could improve the mental health of a child.
Birds Eye Iglo Group is Europe's largest frozen food producer. Birds Eye is owned by private equity firm Permira, who acquired the company in a deal with Unilever in November 2006.