#1Aileen C Addessi
Based in PA
Patent Attorneys & Agents in Butler County, PA
The top-ranked patent attorneys and agents serving Butler County, PA are Aileen C Addessi, Beth Anne Endler and Douglas K McClaine (Mine Safety Appliances Company). We list 487 patent attorneys and agents serving Butler County, PA. 30 of the providers shown match an active record from U.S. Patent and Trademark Office, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Patent Attorneys & Agents serving Butler County, PA. 487 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked patent attorneys and agents for Butler County
#2Beth Anne Endler
Based in PA#3Douglas K McClaine (Mine Safety Appliances Company)
Based in PA#4Erick J Michel (II-VI, Inc)
Based in PA#5Henry E Bartony Jr (Bartony & Associates, LLC)
Based in Butler, PA#6John W Fasnacht (Westinghouse Electric Corporation)
Based in PA#7Joseph Carl Spadacene (Westinghouse Electric Company LLC)
Based in PA#8Joseph F Aceto (Joseph F. Aceto, Ph.D., Esq)
Based in Unionville, PA#9Joseph R Carnicella (Westinghouse Electric Company)
Based in PA#10Karen Tang-Wai Sutton (Law Firm of Karen TW Sutton)
Based in PA
20 more providers serving this area
- Kathleen A Kuznicki (Lynch Weis, LLC), PA
- Kathleen M. Pointon (Westinghouse Electric Company LLC), PA
- Mark R. Luderer (Flaster Greenberg), PA
- Michael A Baffa, PA
- Randall E Murphy, PA
- Richard J Coldren (MSA), PA
- Ryan A. Notzen, PA
- Shannon L Morris, PA
- Stephen A. Mick, PA
- Stephen Ross Green, PA
- Thomas James White (Westinghouse Electric Company, LLC), PA
- Thomas Lizzi (IP & Internet Law North, LLC), PA
- John M Fray (John M. Fray, Attorney At Law), PA
- Linda D French, PA
- Max A. Farino, PA
- Paul Bogdon, PA
- Gerald Joseph Iwanejko Jr (Law Office of Gerald J. Iwanejko Jr. Esq.), PA
- John H Grondwalski, PA
- Bryan C Glass (Greye Glass Equipment, Inc.), Bradford Woods, PA (21 mi)
- Richard Elliot Lee Henderson, Bradford Woods, PA (21 mi)
Request quotes
Frequently asked questions
How many patent attorneys and agents serve Butler County?
We list 487 patent attorneys and agents serving Butler County, PA: 22 based there and 465 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which patent attorneys and agents serve Butler County?
The top-ranked patent attorneys and agents serving Butler County, PA are Aileen C Addessi, Beth Anne Endler, Douglas K McClaine (Mine Safety Appliances Company), Erick J Michel (II-VI, Inc) and Henry E Bartony Jr (Bartony & Associates, LLC). The full ranked list, with the official records each provider matched, is on this page.
Which patent attorneys and agents serving Butler County are verified against official records?
10 of the top 10 match an active official record: Aileen C Addessi (U.S. Patent and Trademark Office), Beth Anne Endler (U.S. Patent and Trademark Office), Douglas K McClaine (Mine Safety Appliances Company) (U.S. Patent and Trademark Office), Erick J Michel (II-VI, Inc) (U.S. Patent and Trademark Office) and Henry E Bartony Jr (Bartony & Associates, LLC) (U.S. Patent and Trademark Office), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What is the difference between a patent attorney and a patent agent?
Both are registered with the USPTO to prepare and prosecute patent applications. Patent attorneys are also licensed lawyers and can handle litigation and other legal matters; agents cannot.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Communities served
Butler, Homeacre-Lyndora, Shanor-Northvue, Zelienople, Meridian, Slippery Rock, Seven Fields, Meadowood, Slippery Rock University, Oak Hills, Evans City, Mars, Nixon, Saxonburg, Prospect, Harmony, Chicora, Unionville, Harrisville, Connoquenessing, East Butler, Valencia, Lake Arthur Estates, Bruin, Callery, West Liberty, Eau Claire, Portersville, Fairview, West Sunbury, Petrolia, Karns City, Cherry Valley, Renfrew, Boyers, Forestville, Fenelton, North Washington