His product liability defense practice concentrates on heavy equipment, machinery and automotive products, although he has litigated many cases involving a wide variety of consumer products.  Examples of machinery and equipment include forklifts, cranes, excavators, farm equipment, snow removal equipment, paper-making machinery, calendars, railroad tank cars, aerial platforms, manlifts, and material handling and conveyor systems.  Automotive products encompass both automobiles and heavy duty trucks, and these cases have included occupant restraint, engine, suspension, transmission and braking systems.  Consumer products include telephones, swimming pools, lawn mowers, power tools, electrical appliances, solvents and other chemicals, medical devices, and pharmaceuticals.  Arnie has litigated claims for defective design and manufacture, failure to warn, breach of warranty, strict liability, deceptive trade practices and punitive damages involving all of these products.  Specific injuries litigated by Arnie include death, paraplegia, quadriplegia, amputations, closed head and psychiatric injuries, and a variety of other physical and mental impairments.

Arnie's construction practice is devoted to representing owners and contractors involved in both public and private building projects. Examples include Pittsburgh’s new airport, Pittsburgh's new baseball stadium on behalf of the Pittsburgh Pirates, Washington County’s new jail, large public housing projects for the Housing Authority of the City of Pittsburgh, school construction and renovation projects, large warehouses, and steel mills. These matters have litigated the full array of construction claims, including delay/acceleration, disruption and interference, inefficiency and lost productivity, errors and omissions of architects and engineers, flawed and defective construction practices, improper design and fabrication, business interruption, and lost profits.