This week, tributes poured in for the ex-JWT international vice-president and head of external affairs for the JWT group, who lost her long battle with cancer at Trinity Hospice in Clapham on Friday.
A one-time copywriter, Mann became an influential figure in industry policy-making and played a key role in the extension of the self-regulation system across Europe.
In 1996, she was awarded an OBE for her services to the Government's Food Advisory Committee.
Alison Burns, the JWT chief executive, said: "Patricia was an amazing woman whose creativity and extraordinary intellect led to a unique career."
Despite failing health, Mann remained active within the industry until early summer. At the time of her death, she was still a governor of the History of Advertising Trust.
Mann's funeral will take place next Thursday at 3pm at Mortlake Crematorium. No flowers but donations to Cancer Research UK. A memorial service will be held at a later date.