Patent Attorney
Mark Douglas Simpson
Reg. No. 32942
Active
Not accepting new clients
Firm
Saul Ewing Arnstein & Lehr LLP
Saul Ewing Arnstein & Lehr LLP
Location
Philadelphia, PA 19102-2186
Philadelphia, PA 19102-2186
Phone
215-972-7880
215-972-7880
Registration Type
ATTORNEY
ATTORNEY
Roster
USPTO OED FY25
USPTO OED FY25
Firm and contact info reflects the FY25 roster (last updated September 25).
Attorneys may have changed firms since then — patent filings show their current firm of record.