About 100 lawyers and staff are poised to leave Ropes & Gray within the next few months, as the US firm prepares to spin off its patent prosecution practice into an independent firm.

The move by Ropes represents a major restructuring of the firm's intellectual property (IP) practice, the bulk of which stems from the firm's 2004 acquisition of 160-lawyer IP boutique Fish & Neave.

Ropes expects the process of creating a new firm focused on patent prosecution to take several months. It is understood that the move will have no impact on the US firm's London office.

Joseph Guiliano, co-head of Ropes & Gray's IP rights management practice in New York, will lead the as-yet-unnamed new firm. Guiliano and Ropes chairman Bradford Malt confirmed the restructuring of the firm's IP practice in an evening interview with The American Lawyer. The two lawyers attributed the decision to finding the best way to serve clients, who were consulted on the proposed transition.

"We are still a committed, IP-driven firm, whether it's in IP litigation, IP transactions, trademarks or other aspects of patents that are integrated into our other practice areas," said Malt, noting that Ropes & Gray's life sciences, M&A and public offerings groups all touch on certain areas of IP, whether it be through litigation risk assessments or disclosures related to new technology.

Among the many things that will change at Ropes is that the 1,160-lawyer firm will no longer do patent prosecution work, Malt said. He declined to discuss how much revenue the patent prosecution practice generated within the past year, but noted that Ropes will have a close, if not exclusive, referral relationship with the new firm being created.

"There has been a lot of talk recently about the need for law firms to innovate and do work cheaper and faster," Malt said. "If you step back and look at this from 20,000 feet, Joe and I had to find a way to serve clients with the proper overhead, cost structure and leverage ratios. And we had to look at whether [patent prosecution] belonged in the environment of a large firm."

Guiliano, a former Fish & Neave lawyer, said he is still working out the "size and constituency" of his new firm, which will initially have offices in New York and Silicon Valley. He estimated the number of lawyers and other employees – such as patent agents and other technical staffers – expected to join the new firm at about 100. Guiliano acknowledged that not everyone affected by the spin-off might make the move to the new firm. Some individuals whose work touches on other areas of IP that Ropes will continue to handle could stay at the firm, he said, while others will likely choose to head elsewhere.

Anita Varma, co-head of Ropes' IP rights group in Boston, is among those leaving the firm, Guiliano said. Her biography page was recently taken down from the Ropes website and Guiliano is now listed as the group's sole leader. Varma did not immediately respond to a request for comment.

The American Lawyer reported in January on Paul Weiss Rifkind Wharton & Garrison's hire of longtime Ropes & Gray IP litigation partner Steven Baughman in Washington DC, where he headed the firm's post-grant US Patent and Trademark Office invalidity challenge and trial practice.

McDermott Will & Emery has added three IP litigation partners from Ropes – Ian Brooks, Nicole Jantzi and Paul Schoenhard – this year in Washington DC, where Jones Day recruited Ropes IP litigation partner Christopher Harnett in January. Malt said the increased lateral activity from the firm's IP group was due to the upcoming restructuring, as well as other changes that have affected the wider IP field.

As noted by The American Lawyer last month, the creation five years ago of the Patent Trial and Appeal Board (PTAB) moved patent disputes into a less costly litigation venue. The creation of PTAB practices tightened competition in the IP arena, even as larger, general practice firms moved into the area, many by acquiring boutiques.

"Looking at IP more broadly, PTAB definitely moved litigation to quicker, more efficient forums, and a US Supreme Court ruling reduced some IP litigation," said Malt. "I think you see a lot of big firms now realising that they're a bit oversized in IP."

The US Supreme Court's 2014 ruling in Alice v CLS Bank International narrowed and clarified the scope of what can be considered patentable subject matter, which some have argued makes patent prosecution all the more important for clients.

When asked what Ropes' decision to spin off its patent prosecution group might mean for others in his field, Guiliano said every firm must analyse its own situation, rather than use his group's move to proclaim the new rise – or disappearance – of IP boutiques.

"We realised that there were certain trends that happened in Big Law, but now there's almost a next-level type of analysis going on," Guiliano said. "For us, it just made sense to work at a smaller firm."