DePenning & DePenning is an IP boutique respected for its all-round practice and particularly praised for its prosecution work. On the back of this praise, the firm rises to Tier two in the trade mark prosecution rankings this year. Peers concur, with one noting: "The firm is way up there in trade mark filings and good in quality too." Clients find the firm responsive and work is of a high standard, with a client saying: "International business requires quicker response and more efficient communications than before. We see the attitude of the firm is customer-oriented and it tries to meet our requirements."
A notable matter for the firm was advising F Hoffmann La Roche in the defence of its patent in a post-grant opposition from Cipla. This is one of the few post-grant oppositions relating to a pharmaceutical patent in which the registration was successfully defended. The opposition was dismissed and the patent upheld in August 2010.
A client commends the firm: "We have also used it for patent prosecution work. It is very cost-efficient and does excellent patent prosecution."