Our Partners
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Laurence A. Greenberg
Board Certified Intellectual Property Lawyer
– Managing PartnerLaurence A. GreenbergBoard Certified Intellectual Property Lawyer
– Managing PartnerLaurence A. Greenberg has been the Managing Partner of the Lerner Greenberg Stemer LLP law firm since 1990. His professional efforts are mainly directed toward advising clients, educating colleagues and practicing in the areas of Intellectual Property prosecution, as well as litigation and dispute resolution. Mr. Greenberg has been a lecturer in the field of Intellectual Property Law, with particular emphasis on the Patent Cooperation Treaty and in explaining the nuances and changes in U.S. Patent and Trademark law in the United States, and to Intellectual Property practitioners abroad. Learn More -
Werner H. Stemer
Board Certified Intellectual Property Lawyer
– PartnerWerner H. StemerBoard Certified Intellectual Property Lawyer
– PartnerWerner H. Stemer grew up in the Montafon Valley in Vorarlberg, Austria. He has lived in Florida since 1984 and makes his home in Fort Lauderdale. Mr. Stemer holds degrees from the University of Innsbruck, Austria (M.A.), from Florida International University (B.S., physics), from Kennedy Western University (Ph.D.), and from Nova Southeastern University (J.D., magna cum laude). Mr. Stemer has more than thirty years experience in patent law and he is board certified as an expert in intellectual property law (Florida Bar Board of Legal Specialization). His primary expertise lies in the prosecution of patents and trademarks, patent appeals, and international (PCT) patent applications. Learn More -
Ralph E. Locher
Board Certified Intellectual Property Lawyer
– PartnerRalph E. LocherBoard Certified Intellectual Property Lawyer
– PartnerRalph E. Locher was born in Mount Pleasant, Pennsylvania, USA. He has lived in Florida since 1996 and makes his home in Cooper City together with his wife Shelly and their children Tonya, Kristie, and Nicholas. Mr. Locher received a Bachelor of Science Degree in Business Management from Northern Illinois University, 1983, B.S. degree in Electrical Engineering from Southern Illinois University – Carbondale in 1986, and a Juris Doctorate in Law from St. Louis University (cum laude 1994). Mr. Locher is a member of the Florida Bar, the Illinois Bar, the Missouri Bar, and is registered to practice before the U.S. Patent and Trademark Office. Mr. Locher was one of Florida’s first board certified intellectual property law attorneys. Learn More
Our Associates
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Jacob C. Stemer
Jacob C. StemerMr. Stemer holds undergraduate degrees in Physics (B.S. Florida Atlantic University) and History (B.A. University of Central Florida). He graduated from the University of Miami School of Law in 2021 (J.D., cum laude) where he was a staff editor for the University of Miami Law Review. Mr. Stemer was admitted to the Florida Bar in 2021 and is registered to practice before the United States Patent and Trademark Office. From 2016 until becoming an attorney, Jake practiced as a registered patent agent where he gained experience writing and prosecuting patent applications in various technical areas such as electronics, home appliances, tire treads, automotive components, and more. Jake is conversational in German Learn More -
Kerry P. Sisselman
Kerry P. SisselmanKerry P. Sisselman received a Bachelor of Science Degree in Electrical Engineering from the University of Illinois at Urbana/Champaign. In 1992, Ms. Sisselman received a Juris Doctorate in Law from Indiana University at Bloomington (cum laude). Ms. Sisselman is a member of the Indiana Bar and is registered to practice before the United States Patent and Trademark Office. Ms. Sisselman has a varied range of experience, having written and prosecuted patent applications relating to inventions in such diverse areas as computer hardware and software, medical devices, oil rigs, semiconductor device fabrication, consumer electronics products, motor vehicle control systems and cameras. Learn More -
William H. Dippert
William H. DippertWilliam (Bill) H. Dippert has focused on helping individual inventors, universities, and pharmaceutical and medical device companies protect and enforce their domestic and international intellectual property rights for over 30 years. In addition, he has advised venture capitalists who invest in medical technology companies. Bill’s medical device, surgical device, and pharmaceutical clients span a broad array of technologies, including angioplasty, atherectomy, stents and stent delivery, endovascular devices, arthroscopic devices and treatments, ablation catheter systems, minimally invasive surgical equipment, drug delivery systems, and treatment of breast cancer, prostate cancer, and BPH. Learn More -
Mark P. Weichselbaum
Mark P. WeichselbaumMr. Weichselbaum has over twenty years of experience preparing and prosecuting patent applications in complex computer, electrical, biomedical, and mechanical engineering technologies. His previous legal employment includes positions as a Technical Advisor and as an Attorney performing patent prosecution at a law firm in the Southeastern United States. His previous engineering employment includes working in the defense industry as an Electrical Engineer. Learn More -
Alfred K. Dassler
Alfred K. DasslerAlfred Dassler is a registered U.S. patent agent in the United States Patent and Trademark Office and has worked at Lerner Greenberg Stemer LLP since 2001. Al specializes in the preparation and prosecution of patents. His areas of expertise are in metal forming, tool and die design, and thermoplastic molding. He is fluent in German. Al has a wide range of patent prosecution experience, including patent applications in the areas of printing equipment, material handling equipment, nuclear power, automobile components, medical devices, marine equipment, sporting equipment, tools, consumer goods, machine tooling, pharmaceutical packaging, railway equipment, pharmaceutical labeling, and household appliances. Learn More
Of Counsel
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Sarah M. Stemer
Sarah M. StemerSarah M. Stemer graduated with honors from the University of Florida in 2006 with majors in History and German Language. During college, she was appointed to the National Honor Society and received multiple Dean’s List awards. Ms. Stemer studied abroad at the University of Koblenz-Landau and, after graduating, she interned in the patent department at Siemens AG in Munich, Germany. Ms. Stemer graduated from the University of Florida Levin College of Law in 2010. While in law school, she interned at the Office of the State Attorney for the 17th Judicial Circuit. She was also a member of the Law School Mentoring Project, an organization that offered free tutoring to underprivileged elementary school students. Learn More -
David W. Barman
David W. BarmanDavid W. Barman holds undergraduate degrees in Chemistry and Music from the University of North Carolina at Chapel Hill, B.S. 1990 and was a member of the inaugural class at the Florida International University College of Law in Miami Florida, JD., 2005. David earned Dean’s List honors at each of UNC and FIU. He is a member of the Florida Bar and is admitted to practice in Florida, U.S. Court of Appeals for the Federal Circuit, the Supreme Court of the United States, U.S. District Court for the Southern District of Florida, U.S. District Court for the Middle District of Florida, and the United States Patent and Trademark Office. Learn More
Support Staff
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Lucia
Controller
LuciaController
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Anja Baker
Receptionist
Anja BakerReceptionist
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Birgit Bartell
Office Manager
Birgit BartellOffice Manager
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Barbara Bubser
Trademark Paralegal
Barbara BubserTrademark Paralegal
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Michael Burns
Secretary
Michael BurnsSecretary
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Katie Elekes
Docket Clerk
Katie ElekesDocket Clerk
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Rene Ulrich
Docket Manager
Rene UlrichDocket Manager
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Alexia Vrahimis
Secretary
Alexia VrahimisSecretary
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Monica Zurbano
Secretary
Monica ZurbanoSecretary