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John B.Kopf


O 614.469.4743

John B.Kopf


Focus Areas

  • Represented turbine manufacturer in claims for project delay, liquidated damages, defects, and change orders arising out of hydroelectric power plant construction.
  • Represented CM in project delay, change order, lien, builder’s risk, extra work, and Legionella exposure disputes arising out of new hospital construction.
  • Represented food, beverage, and dairy plant engineering firm in $29 Million of disputes arising out of plant construction, including contract, performance specification, defect, delay, liquidated damages, and lien claims.
  • Represented global development assistance company in $7 Million of claims arising out of road construction project in Afghanistan.
  • Represented natural gas pipeline owner in $4.5 Million in disputes over contract balance, change order, defect, and subcontractor claims.
  • Represented natural gas pipeline owner in $4.2 Million of contract balance, change order, defect, and lien claims.
  • Represented pipeline contractor in $3.4 Million in mechanics’ lien claims on natural gas pipeline project spanning two states.
  • Represented pipeline contractor in $3.2 Million of change order and extended general conditions claims resulting from differing site conditions on natural gas pipeline project.
  • Represented contractor in $2 Million of claims against department of transportation for differing site conditions and constructive changes.
  • Represented sports development company in claims of $2.8 Million against city for redevelopment services for stadium in south Florida.
  • Represented healthcare facility development and consulting company in disputes over $1.5 Million in unpaid development costs and fees for ambulatory care center and medical office building project.
  • Represented steel framing subcontractor who had provided exterior wall panels in construction defect disputes arising from water infiltration caused by failure in EIFS system at multi-story apartment development.
  • Represented general contractor in respect to qui tam and other claims arising from unlicensed subcontractor work on university project.
  • Represented designer in disputes arising from defective foreign fittings at fuel line installation project at airport.
  • Represented contractor in claims asserted by department of transportation for alleged defects in bridge coating systems.
  • Represented low voltage cable supplier in lien, payment bond, and contract claims, and in respect to bankruptcy related issues, on public and private projects in multiple states.
  • Represented landscape company in claims for work arising out of installation of irrigation system at the Washington Monument.
  • Represented owners in defect and warranty disputes at multifamily residential developments in multiple states.
  • Represented contractor in successful bid protest for municipal parking garage project.
  • Represented general contractor in successful court challenge to arbitration award issued in connection with disputes over retail center construction project.
  • Represented steel fabricator in litigated delay and backcharge claims for bridge construction project, and arbitrated supply delay and quality disputes with steel manufacturer.
  • Represented ceiling and partition subcontractor in conditional payment clause dispute arising from construction of facilities at a club and spa project.
  • Represented excavation contractor in contract and public lien claims on school construction project.
  • Represented contractor in bad faith claims against surety.
  • Represented material supplier in payment bond claims for laboratory construction project owned by public university.
  • Represented owner of apartment development project in disputes with contractor over changes, delays, and defects.
  • Represented contractor in proceedings before the Department of Commerce regarding alleged failure to pay fringe benefits.
  • Represented supplier in public lien claims for work provided for university library renovation project.
  • Represented stucco subcontractor on conditional payment clause claim disputes on retirement community project.
  • Represented underground utility company in bid protest for water main installation project for county and port authority.
  • Represented painting contractor in contract claims against university.
  • Represented modular construction company in disputes arising from construction of a performing arts center project, and in disputes about change orders and wrongful termination from construction of parking garage project.
  • Represented mechanical contractor in bid protest with County owner of ballpark construction project.
  • Represented precast concrete supplier in numerous contract, payment bond, and lien claims.
  • Represented HVAC supplier in contract, unjust enrichment, and payment bond disputes for work on retirement community project.
  • Represented contractor in defense of asphalt subcontractor claims on Interstate 81 project in West Virginia.
  • Represented rough carpentry subcontractor in claims against developer of student apartment projects in multiple states.
  • Represented general contractor in coverage dispute with CGL liability insurer over claims for wind damaged lighting poles at stadium project.
  • Represented non-profit owner in disputes with architectural firm arising from defects in stucco and masonry work on historic building.
  • Represented owner of auto mart project in claims for additional work asserted by site contractor and owner claims for property damage.
  • Represented project designer in relation to differing site condition claims asserted by general contractor on municipal pump station project.
  • Represented commercial retailer in lien and unjust enrichment claims asserted by subcontractors and suppliers after general contractor went out of business.
  • Represented insurer in subrogation claims against mechanical engineering firm for indemnity for losses arising from oversized HVAC systems for condominium and townhome project.
  • Represented homeowners in defect, delay, warranty, Home Solicitation Sales Act, and Home Construction Services Act claims against contractors.
  • Construction Disputes: Effective (and Practical) Legal Negotiation Strategies; NBI; July 2014
  • Construction Defect Litigation: From A to Z; NBI; November 2014
  • Construction Disputes: Effective (and Practical) Legal Negotiation Strategies; NBI; October 2014
  • The Housing Fallout – Are We Going to Extra Innings; William J. O’Neill Great Lakes Regional Bankruptcy Institute; May 2014
  • Construction Defect Litigation: From A to Z; NBI; March 2013
  • Building Codes (National Teleconference); NBI; January 2013
  • OFCC and Construction Reform; Central Ohio ABC; December 2012
  • OFCC and Construction Reform; Builders Exchange; October 2012
  • Construction Defect Litigation: From A to Z; NBI; September 2011
  • A Practical Guide to Construction Liens; NBI; December 2010
  • Construction Defect Litigation: From A to Z; NBI; September 2010
  • Masters Institute on Ohio Construction Law; Tools for Success; 2010
  • Developments in Ohio Construction Law; Ohio State Bar Association; March 2010
  • Avoiding Building Code Violations; NBI; December 2008
  • The Law of Military Leave for Corporate Counsel: SERRA; Co-ACCAD; 2003
  • Listed in The Legal 500, 2022
  • Selected for inclusion in The Best Lawyers in America© 2021, 2022 and 2024 for Commercial Litigation, Construction Law, and Litigation-Construction
  • 2001 National Appellate Advocacy Competition (ABA) Quarterfinalist
  • CALI Award—Property
  • CALI Award—Estates & Trusts
  • CALI Award—Law & American History
  • CALI Award—Criminal Procedure
  • Order of the Barristers

Professional Associations

  • Builders Exchange of Central Ohio
  • Associated General Contractors of Ohio, Legislative Committee Member
  • Past Chair, Ohio State Bar Association Construction Law Committee

Professional Activities

  • Research Editor • Capital University Law Review 2001-2002
  • Staff Member • Capital University Law Review 2000-2001


  • Capital University Law School, J.D., 2002,
    summa cum laude
  • The Ohio State University, B.A., 1998

Bar Admissions

  • Ohio

Court Admissions

  • U.S. Court of Appeals for the Sixth Circuit
  • U.S. District Court for the Eastern District of Michigan
  • U.S. District Court for the Northern District of Ohio
  • U.S. District Court for the Southern District of Ohio