Glenn A. Weiner

Glenn concentrates his practice on business litigation—with a particular emphasis on appellate litigation— and is the Chair of the Litigation Department’s Appellate Litigation Practice Group.

Clients have said they appreciate his ability to gain a deep knowledge of their company and what is truly important to them while using a common sense and business-friendly approach to resolve disputes.

In his appellate work, Glenn has briefed and argued appeals in every state and federal appellate court in Pennsylvania, Delaware and New Jersey, as well as other state and federal appellate courts around the country. Numerous state supreme courts, including those of Pennsylvania, New Jersey, Minnesota and Arizona, have granted his petitions for discretionary review of matters for his clients.

In his trial practice, Glenn has tried cases regarding a wide variety of claims in state and federal courts and arbitration forums in Pennsylvania, New Jersey, New York, Delaware, and other jurisdictions.

Glenn represents clients in a wide range of matters, including disputes involving governance of corporations and alternative business entities, and contract, employment, fiduciary duty, real estate, real estate tax assessment and uniformity issues, securities, trademark infringement, trade secrets, zoning, and other business tort matters. He also represents clients in matters involving administrative agencies and self-regulatory organizations, including conducting internal investigations and handling enforcement matters. Glenn’s clients have included consulting firms, directors and officers, equity investors, information technology services providers, investment banks, lenders, logistics companies, manufacturers, members of LLCs, outdoor advertising companies, private equity sponsors and portfolio companies, real estate developers and owners, large retailers, and technology companies, among others.

Glenn was appointed to a three-year term as a Hearing Committee Member for the Disciplinary Board of the Pennsylvania Supreme Court. He also serves as a certified arbitrator for the Philadelphia Court of Common Pleas.

Presenter, “The Appellate Record: What’s Included, What’s Not and How to Ensure It Contains Everything You Need,” accredited CLE Program, March 26, 2025

Quoted, “Klehr Harrison Launches Appellate Litigation Group,” Law360, July 1, 2024

Press Release, “Klehr Harrison Announces Appellate Litigation Practice Group,” June 26, 2024

Press Release, “Glenn Weiner Named Standout Lawyer,” May 23, 2023

Quoted, “Pa. Panel Calls Philly Commercial Tax Hikes Unconstitutional,” Law360, July 30, 2021

Quoted, “Philly judge orders city and schools to repay nearly $50 million in tax revenue to commercial property owners,” The Philadelphia Inquirer, July 18, 2019

Quoted, “Philly Commercial Property Tax Hike Ruled Unconstitutional,” Law360, July 18, 2019

Presenter, “Letters of Intent: Be Careful What You Wish For,” accredited CLE seminar, November 18, 2014

Presenter, “Brief Writing,” accredited CLE seminar, February 7, 2008

Representative Matters:

• As one of the lead counsel at trial, obtained a fully favorable decision in Duffield House Associates, L.P. v. City of Philadelphia and consolidated cases. The unprecedented decision required the City of Philadelphia to refund as much as $63 million to commercial property taxpayers because the City’s reassessment of only commercial properties was in violation of the Uniformity Clause of the Pennsylvania Constitution. Served as lead counsel on appeal, arguing on behalf of the group of taxpayer counsel, and successfully defended the trial verdict when the decision was affirmed by the en banc Commonwealth Court and the Pennsylvania Supreme Court denied allowance of appeal.
• Successfully defended on appeal an order of the Philadelphia Court of Common Pleas quashing approximately 140 real estate tax assessment appeals of commercial properties by the Philadelphia School District because of violation of the Uniformity Clause of the Pennsylvania Constitution. Selected to argue the appeals in Commonwealth Court by the group of taxpayer counsel on behalf of all affected taxpayers.
• Obtained summary judgment in favor of an IT services company in a AAA arbitration in which a software provider alleged that the company misappropriated trade secrets and breached contractual confidentiality provisions in a license agreement, and sought preliminary and permanent injunctive relief and damages of up to $80 million.
• Successfully petitioned a state Supreme Court for review of a Court of Appeals decision reversing a trial verdict in our client’s favor, resulting in the Supreme Court summarily reversing the Court of Appeals and, on remand, the Court of Appeals affirming the favorable trial court verdict and awarding our client counsel fees.
• Obtained, on behalf of private equity partnership, its sponsor and its principal, dismissal of all claims, including conversion, unjust enrichment, fraudulent transfer, aiding and abetting breach of fiduciary duty, civil conspiracy, rescission, fraudulent and negligent misrepresentations and violations of federal and state securities acts, by investors in partnership who asserted their investments were taken without proper authorization.
• Conducted a forensic audit and co-authored a report for The Harrisburg Authority regarding the accumulation of more than $300 million in debt related to the Harrisburg municipal incinerator.
• Successfully defended an appeal in Pennsylvania Supreme Court of the grant of a gaming license to one of two successful applicants in Philadelphia and obtained an order from Pennsylvania Supreme Court in original proceeding directing City to grant zoning approvals to gaming licensee.
• Obtained a multimillion-dollar verdict for Fortune 50 company involving breach of retrospective equity adjustment agreement by client’s co-equity sponsors in foreign power plant project.
• Obtained order on appeal vacating summary judgment against client on issue of first impression in federal courts regarding the application of overtime laws to employee benefits offered through Section 125 “cafeteria plan.”
• Obtained then-record damage award under the Anticybersquatting Consumer Protection Act of 1999, recovering the maximum amount of statutory damages available under the Act, plus all attorney’s fees and costs and possession of the five domain names in question, then defended the verdict on appeal.
• Obtained summary judgment for investor in convertible debentures requiring issuer to deliver common stock to the investor worth more than $1.2 million on the investor’s $50,000 investment and to pay the investor’s attorney’s fees and
• Jointly obtained a multimillion-dollar trial verdict for equipment finance lender against borrower and guarantors, recovering all principal and accrued interest, plus attorney’s fees and costs, then defended the verdict on appeal.