Daniel M. O'Brien

Daniel M. O'Brien maintains a patent litigation practice, appearing in both plaintiff and defendant-side representations. His experience, based on tracked cases, indicates an involvement with technology spanning medical devices and broader computing or mobile technology. Specifically, he has handled matters such as Angiodynamics Inc v. Endovascular Engineering Inc on the defendant side, suggesting familiarity with medical technology, and EXPRESS MOBILE, INC. v. International Business Machines Corporation as plaintiff's counsel, pointing to expertise in software or mobile computing-related patents.

O'Brien appears to work for both operating companies and plaintiffs asserting patents. His tracked appearances include one case for a plaintiff and one for a defendant. In these matters, he has served in roles such as local counsel for Ashby & Geddes and of counsel for Beltran & O'Brien. The firm Beltran & O'Brien, or similar entities like Beltran & Beltran LLP, are often associated with personal injury or immigration law, suggesting O'Brien may be engaged by such firms for his specific patent litigation expertise on an "of counsel" basis, rather than being a primary partner in their general practice.

Due to the limited public information directly linking Daniel M. O'Brien with the specific firms and practice areas for patent litigation, detailed outcomes for his tracked cases are not readily available in public records tied to his name. Information regarding his regular involvement in PTAB or IPR proceedings, specific notable trial results, or publications focused on patent law could not be reliably sourced from publicly available professional profiles for this specific attorney. Similarly, without a definitive professional profile, details on his bar admissions and education cannot be reliably provided to avoid confusion with other attorneys of the same name.