Howrey's London operation is gearing up for an office move to double its size in the capital.
The firm plans to move into a new building at 5 New Street Square by the end of autumn next year, subletting the space from IP competitor Taylor Wessing.
Howrey will take 40,000sq ft of Taylor Wessing's 166,000sq ft in the new development.
The two firms crossed swords last month when Howrey pinched Taylor Wessing's life sciences head Mark Hodgson.
The move will be the firm's second in London after transferring from City Point to Tudor Street last year. In that move the firm gained 8,000sq ft of space, increasing in size from 10,000sq ft to 18,000sq ft.
A push to grow through lateral hires has prompted the move.
Howrey partner James Irvine said: "One of the principal areas we're looking to grow is arbitration. We have a big desire to bring on board arbitration talent."
Howrey has concentrated on IP this year, bringing in Hodgson and tempting former Linklaters IP chief Jeremy Brown out of retirement. Irvine said the firm was likely to keep up with salary rises to tempt associates, but not until UK firms have made the move.
Irvine said: "We aim to be 5 per cent above the magic circle. We do a worldwide salary review on an annual basis, but that is about eight or nine months away."