Buchanan Ingersoll & Rooney to acquire intellectual property law firm RatnerPrestia


Buchanan Ingersoll & Rooney and RatnerPrestia agreed to combine with 22 lawyers and two patent agents set to join Buchanan on January 1, 2024.

The former RatnerPrestia group will join Buchanan’s intellectual property section. Both firms have offices in Wilmington, a center for intellectual property law.

The combination increases the firm’s intellectual property section by 65% and bolsters its presence in the Mid-Atlantic region. RatnerPrestia has offices in Wilmington, Philadelphia, and Washington, D.C.

 Both firms enter the combination from positions of financial strength with deep client relationships and cultures that focus on maintaining the highest levels of client service. Terms of the deal were not disclosed. 

“We are thrilled to welcome this group of impressive lawyers to our firm,” said Joseph Dougherty, Buchanan CEO. “The addition of this group is a major step in our growth strategy for the firm.It increases our resources to enhance client service and expand relationships, not only in IP-related matters but across our full-service platform.”  


“We knew that Buchanan was the right fit for us and our clients,” said Jonathan H. Spadt, former CEO of RatnerPrestia. Spadt will serve as Co-Chair of the IP Section. 

Spadt added: “Buchanan’s platform is perfectly situated to support our clients in the United States and around the globe, and its dynamic, collaborative culture will support the expansion of our practices. We look forward to supporting the continued growth of the firm and its IP section.”  

Buchanan’s IP section serves clients from global Fortune 500 companies and large universities to individual inventors and entrepreneurs. The firm has about 500 lawyers.