#1 Barbara Joan Haushalter (Law Office of B. Joan Haushalter)
Based in Bellefontaine, OH
Call (937) 592-8603Patent Attorneys & Agents in Logan County, OH
The top-ranked patent attorneys and agents serving Logan County, OH are Barbara Joan Haushalter (Law Office of B. Joan Haushalter), Thomas Edward O'Connor Jr (The Law Office of Thomas E. O'Connor Jr.) and Andrew Kefalonitis Jr (Honda Patents & Technologies North American, LLC). We list 17 patent attorneys and agents serving Logan County, OH. 17 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 Logan County, OH. 17 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 Logan County
#2 Thomas Edward O'Connor Jr (The Law Office of Thomas E. O'Connor Jr.)
Serves this area from OHCall (937) 935-6762#3 Andrew Kefalonitis Jr (Honda Patents & Technologies North American, LLC)
Serves this area from OHCall (937) 309-2635#4 Christopher E. Allen
Serves this area from OHCall (937) 309-5901#5 Clifford B Vaterlaus (Honda Patents & Technologies North America, LLC)
Serves this area from OHCall (937) 309-2079#6 Gregory J Burke (Honda Patents & Technologies North America, LLC)
Serves this area from OHCall (937) 309-9292#7 Joshua J Freier (Honda Patents & Techologies North America, Inc.)
Serves this area from OHCall (937) 309-9557#8 Mark E Duell (American Honda Motor Co., Inc.)
Serves this area from OHCall (937) 309-9297#9 Morgan K. Lincoln (American Honda Motor Co.)
Serves this area from OHCall (937) 309-8634#10 Suzanne Baker Gagnon (Honda Patents & Tecnologies, North America, LLC)
Serves this area from OHCall (937) 309-2808
7 more providers serving this area
- Hayden F. Phillips, OH
- Mark A Navarre (Navarre Law Office L.L.C.), OH
- Michael A Forhan (Honeywell International, Inc.), OH
- Curtis Anthony Henschen (Curtis Anthony Henschen, Attorney at Law), Sidney, OH (22 mi)
- James V Allen (Emerson Climate Technologies), Sidney, OH (22 mi)
- Brandon S Hoffman (Thompson, Dunlap, and Heydinger), OH
- Jason M Williams (Crown Equipment Corp.), OH
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Frequently asked questions
How many patent attorneys and agents serve Logan County?
We list 17 patent attorneys and agents serving Logan County, OH: 1 based there and 16 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 Logan County?
The top-ranked patent attorneys and agents serving Logan County, OH are Barbara Joan Haushalter (Law Office of B. Joan Haushalter), Thomas Edward O'Connor Jr (The Law Office of Thomas E. O'Connor Jr.), Andrew Kefalonitis Jr (Honda Patents & Technologies North American, LLC), Christopher E. Allen and Clifford B Vaterlaus (Honda Patents & Technologies North America, LLC). The full ranked list, with the official records each provider matched, is on this page.
Which patent attorneys and agents serving Logan County are verified against official records?
10 of the top 10 match an active official record: Barbara Joan Haushalter (Law Office of B. Joan Haushalter) (U.S. Patent and Trademark Office), Thomas Edward O'Connor Jr (The Law Office of Thomas E. O'Connor Jr.) (U.S. Patent and Trademark Office), Andrew Kefalonitis Jr (Honda Patents & Technologies North American, LLC) (U.S. Patent and Trademark Office), Christopher E. Allen (U.S. Patent and Trademark Office) and Clifford B Vaterlaus (Honda Patents & Technologies North America, 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
Bellefontaine, West Liberty, Russells Point, De Graff, Lakeview, Chippewa Park, Belle Center, West Mansfield, Quincy, Rushsylvania, Huntsville, East Liberty, Ridgeway, Valley Hi, Lewistown, Zanesfield