Jones Day

JONES DAY
Date: 2026-05-03

Analyst Summary

Jones Day is a global BigLaw firm with a significant patent litigation practice. The firm has more than 2,500 lawyers across 40 offices worldwide. It consistently ranks among the top law firms in the AmLaw 100 and is recognized by ranking bodies like Chambers and Partners and The Legal 500 for its intellectual property capabilities. The firm's IP practice consists of over 220 professionals who handle a wide range of contentious and transactional matters.

The firm's patent litigation practice has deep expertise across the technology and life sciences sectors. Jones Day represents market-leading companies in complex, high-stakes disputes involving electronics, telecommunications, semiconductors, software, and pharmaceuticals. Key clients include prominent technology companies like Google, Qualcomm, and NXP Semiconductors, as well as major life sciences companies such as Johnson & Johnson, Merck, and AbbVie. The firm has a strong track record in various popular patent litigation forums, including the Western District of Texas, the District of Delaware, the International Trade Commission (ITC), and the Patent Trial and Appeal Board (PTAB).

Based on publicly available information and the limited case data provided, Jones Day appears to handle both plaintiff-side enforcement and defense work. The provided data shows a single plaintiff-side representation for Reynolds American Inc. v. VPR Brands, where David M. Maiorana is listed as lead counsel. However, broader research indicates a substantial defense practice for major operating companies like Google, NXP Semiconductors, and Johnson & Johnson. The firm has secured significant victories for both plaintiffs and defendants, including a rare directed verdict of non-infringement for Google mid-trial and successful enforcement of patents for R.J. Reynolds at the ITC.

Jones Day has a robust and highly regarded practice before the PTAB, handling a high volume of inter partes review (IPR) and other post-grant proceedings for its clients. The firm's lawyers have been involved in precedent-setting cases at the Federal Circuit and the Supreme Court that have shaped substantive patent law, including matters related to IPR proceedings. The practice is led by seasoned litigators, with Anthony Insogna serving as the global head of the Intellectual Property Practice. Other key partners in the patent litigation group include David Maiorana, who co-heads the patent litigation team, and prominent litigators such as Edward Reines and Randy Kay.