"It is small but good," comments one peer of IP boutique Henry Hughes. The market acknowledges the firm's presence in trade mark prosecution. "Frank Callus is good with patents," says one market observer, while another holds experienced trade marks and copyright expert Barbara Sullivan in high regard. The firm's client base includes Bayer and Paramount Pictures. Principal Margaret Doucas boasts more than 25 years of experience in IP and her practice specialises in pharmaceuticals and biotechnology.