.

Aaron provides legal counsel to attorneys, accountants, real estate agents, home inspectors, home appraisers, insurance brokers, and other professionals. Aaron has strong experience representing insurance brokers throughout Pennsylvania and Delaware, including complex claims involving issues concerning duty of care, policy interpretation, whether alternative policies were available, and claims with nuanced statute of limitations issues. He handles a variety of claims including, but not limited to, legal and accounting malpractice, wrongful use of civil process, commercial litigation, negligence, breach of contract, municipal liability, and civil rights matters.  Aaron is also experienced in consumer financial services litigation and compliance, particularly representing attorneys and agencies in debt collection practices.

Outside of his professional liability practice, Aaron is also an experienced litigator, defending clients in matters involving premises liability, land use, automobile liability, intellectual property and employment law.

Aaron is a 1987 graduate of Millersville University. Following graduation, he taught grades six through eight in the School District of Philadelphia for 12 years. During that time, he earned a Master's Degree in Education from Temple University. While teaching, Aaron attended evening classes at the Beasley School of Law at Temple University where he made the Dean's List and earned honors in Trial Advocacy and Research and Writing. Aaron began his legal career as an associate with a Blue Bell, Pennsylvania law firm, where he primarily focused on defending Pennsylvania municipalities in areas of civil rights law, premises liability, land use and automobile liability.

Aaron has received an AV® Preeminent rating by the Martindale Hubbell.

    • Temple University Beasley School of Law (J.D., 2003)
    • Temple University (M.A., 1995)
      • El. Ed.
    • Millersville University of Pennsylvania (B.A., 1987)
    • Pennsylvania, 2003
    • U.S. District Court Eastern District of Pennsylvania, 2006
    • U.S. District Court Middle District of Pennsylvania, 2016
    • Delaware, 2020
    • U.S. District Court District of Delaware, 2021
    • Top Lawyer, Legal Malpractice, Delaware Today (November 2024)
    • AV® Preeminent™ by Martindale-Hubbell®
    • Claims & Litigation Management Alliance (CLM)
    • Philadelphia Bar Association
    • Professional Liability Defense Federation
    • Proving a Case Within a Case in Legal Malpractice Actions, PLDF Annual Meeting, September 2018
    • Developments in Lawyer Liability in Pennsylvania & New Jersey, client seminar, March 2017 
    • Professional Liability - Issues for Attorneys, client seminar, June 2016
    • Virtual Law Office and Interstate Practice of Law, National Business Institute, April 2015
    • Aaron has been invited to speak to the Pennsylvania Institute of Certified Public Accountants as well as the Pennsylvania Home Inspector Association. Aaron has also given presentations to insurance companies concerning developments in legal malpractice law.
    • "LPL Claims Without Privity: Support for a Bright Line Rule", Professional Liability Defense Quarterly, Fall 2018
    • "Proving The 'Case-Within-A-Case' Standard," For The Defense, April 2018
    • "Demonstrative Evidence at Trial", Pennsylvania Civil Trial Practice, 2017, 2018, Reviewing Author 
    • "Common Evidentiary Issues at Trial", Pennsylvania Civil Trial Practice, 2017, 2018
    • "Responsive Pleadings", Pennsylvania Civil Pre-Trial Practice, 2017, 2018, Reviewing Author
    • Pennsylvania Legal Malpractice Handbook, 2017 Edition2019 Edition, Published by Marshall Dennehey Warner Coleman & Goggin, Co-author 
    • "Pennsylvania Supreme Court Rejects Constitutional Challenge to the Dragonetti Act," Defense Digest, Vol. 23, No. 2, June 2017
    • "An Argument Against Imposing Liability Against Attorneys for Aiding and Abetting Their Client's Breach of Fiduciary Duty Under Pennsylvania Law," Defense Digest, Vol. 17, No. 4, December 2011
    • "Former Phillies Tyler Green Thrown a Curve on Appeal for Legal Fees," Defense Digest, September 2007
    • "Medical Malpractice Plaintiff's Motion for Relief from Judgment of Non Pros Lacks Merit," Defense Digest, March 2007
    • Regular contributor to MDWC&G Case Law Alerts.
    • Successfully obtained dismissal of claims brought derivatively and directly by a corporation, including aiding and abetting breach of fiduciary duty and tortious interference with contract. The claims were brought against our client, an out of state attorney who previously represented the corporation and its former director. The Court granted the attorney’s Motion to Dismiss, concluding that the plaintiffs failed to sufficiently allege facts that would confer personal jurisdiction over the attorney under a conspiracy theory.
    • Successfully obtained dismissal of wrongful use of civil proceedings claims brought against our clients, two attorneys who were alleged to have wrongfully prosecuted a professional negligence claim against the plaintiff, a real estate agent. The plaintiff would not accept any settlement that was less than policy limits. After five years of litigation, the Court granted the attorney defendants’ summary judgment motion, concluding that the plaintiff failed to adduce facts that would reflect that the attorneys prosecuted the for obtaining dismissal of wrongful use of civil proceedings claims brought against our clients, two attorneys who were alleged to have wrongfully prosecuted a professional negligence claim against the plaintiff, a real estate agent. The plaintiff would not accept any settlement that was less than policy limits. After five years of litigation, the Court granted the attorney defendants’ summary judgment motion, concluding that the plaintiff failed to adduce facts that would reflect that the attorneys prosecuted the underlying action in a grossly negligent manner, or without probable cause. The Court also held that the plaintiff was unable to demonstrate that the underlying lawsuit was prosecuted for an improper purpose.
    • Successfully defended a home inspector before the Delaware Division of Professional Regulation. The Claimants sought disciplinary action against our client in connection with his inspection of their home. We were able to persuade the Division that the complained of defects at the property were not subject to inspection because they were not visible at the time of inspection. The Division weighed all concerns involved in the matter and on November 1, 2023, it concluded that the facts did not reflect a violation of the laws, rules, and regulations that governed the activities of the licensed professional.
    • A unanimous jury found in favor of our clients, a lawyer and his law firm in a legal malpractice case arising out of the lawyer’s drafting of a postnuptial agreement. The postnuptial agreement was invalidated by a family court judge, causing the husband to lose approximately $1.2 million as part of a subsequent property separation agreement. The jury considered testimony from the plaintiff’s ex-wife which reflected that she had signed the agreement under duress and concluded that the plaintiff could not demonstrate that the postnuptial agreement was invalidated as a result of anything the lawyer did.
    • Plaintiff claimed that estate attorneys misinterpreted stock restriction agreement causing Plaintiff's husband's estate to lose in excess of $1 million.  Court held that agreement was properly interpreted by attorneys
    • Attorney prosecuted civil rights claim on behalf of mother of son who was shot and killed by a Philadelphia police officer while unarmed and posing no threat to the officer.  Mother of decedent served as administrator of estate and retained proceeds of settlement.  Decedent allegedly had two children who should have received the proceeds.  Attorney sued by children's mother on their behalf. Plaintiff's minor children made $1 million settlement demand  just prior to the court's dismissal of the claims. 
    • Plaintiff claimed that his attorney failed to properly prosecute his workers' compensation claim causing his benefits to be discontinued.  Plaintiff's claims dismissed by way of summary judgment motion.
    • Buyers of real property sued real estate agent for seller, claiming misrepresentations regarding use of the property.  Claims dismissed by way of summary judgment motion.
    • Success in getting a number of legal malpractice cases dismissed promptly by way of preliminary objections. In such cases, the Plaintiff failed to allege facts that, even if true, could yield liability as to our client.
    • Success in getting a number of legal malpractice cases dismissed upon the filing of motions for non pros as a result of opposing counsel's failure to comply with the Pennsylvania Rules of Civil Procedure.
    • Summary judgment and motions to dismiss granted on behalf of a number of clients. In one recent case, the plaintiff claimed that our attorney client was liable to him for wrongful use of civil proceedings and was seeking in excess of $3 million in damages. Upon the filing of a Motion for Summary Judgment, the court dismissed our client, finding no liability whatsoever.
    • Success in defending clients at arbitration hearings and bench trials, including cases involving alleged home inspector liability and insurance subrogation claims.

Results

One Month – 4 Outstanding Results! Aaron Moore Obtained Four Successful Results on Behalf of Clients in the Span of One Month

Defense verdict on behalf of a real estate broker and agent. The plaintiffs, homebuyers, claimed that the sellers’ broker and agent were liable to them for the value of fixtures that were taken by the sellers when they vacated the property, which were alleged to have been included in the sale. At a bench trial, the judge determined that neither the broker nor the agent could be held liable to the plaintiffs because the representations regarding what was included in the sale were made by the sellers. Supreme Court affirmance of dismissal of a complex legal malpractice lawsuit. Aaron and Carol Vanderwoude obtained a Delaware Supreme Court affirmance of the trial court’s dismissal of a complex legal malpractice claim. The plaintiffs, seven affiliated companies and their owners in the business of developing property, had been sued by their bank for defaulting on multiple lines of credit. The bank filed multiple lawsuits against the property developers, claiming approximately $7 million in damages, plus attorneys’ fees, which were recoverable pursuant to the terms of the promissory notes. The property developers retained our client to defend the lawsuits, asserting that the amounts claimed to be owed to the bank were significantly overstated. Our client vigorously defended the bank’s underlying lawsuits. Ultimately, the property developers settled the bank’s lawsuits for the entire amount owed, plus interest and the bank’s legal fees. The developers argued that its attorneys should have advised them to settle the bank’s claims after the lawsuits were commenced and that, if they had done so, they would not have had to pay the bank’s legal fees, our client’s legal fees, or expert witness fees, or the additional interest on the loan. The property developers also claimed that not settling with the bank earlier caused them lost business opportunities valued at nearly $1 million. The plaintiffs’ legal malpractice claims were dismissed because their expert witness, a Maryland attorney with no business litigation experience, was not qualified to serve as an expert and because their damages claims were speculative. Motion to dismiss in complex matter involving claims of fraud, misappropriation of trade secrets, tortious interference with contractual relations, and piercing the corporate veil. The plaintiff, an investment fund, had purchased a business that was controlled and primarily owned by our client. The business ultimately went bankrupt, and the plaintiff claimed that the purchase was premised upon misrepresentation by our client. The plaintiff maintained that jurisdiction in Delaware was proper pursuant to the Asset Purchase Agreement. The District Court was persuaded by arguments reflecting that it lacked personal jurisdiction over our client, a citizen of Canada, even though he signed the Asset Purchase Agreement which included language conferring jurisdiction over claims arising from the sale in Delaware. The court agreed that our client did not sign the agreement in his individual capacity, and the plaintiff’s piercing the corporate veil allegations were insufficient to confer personal jurisdiction. Dismissal of an unjust enrichment claim. Obtained dismissal of an unjust enrichment claim brought by a condominium unit owner against the attorneys who represented her condominium association. The unit owner claimed that the law firm was liable to her for unjust enrichment in connection with legal fees it received from the association for legal services provided in efforts to collect on past due assessments owed by the unit owner. Pursuant to the association’s governing documents, the charges were passed on to the unit owner. The court agreed that the fees that were paid to our client by the condominium association were properly earned.

Unanimous Appellate Decision Preserves Defense Win in Legal Malpractice Suit

We successfully defended an appeal from a jury verdict previously secured by members of our Lawyers’ Professional Liability Department in favor of the firm’s client in a legal malpractice case. The plaintiffs initially asserted multiple tort claims and a claim under the Unfair Trade Practices and Consumer Protection Law, which were dismissed by the trial court upon partial grant of the defense’s motion for judgment on the pleadings. The case proceeded to trial on a remaining breach of contract claim, resulting in a defense verdict. On appeal, the plaintiffs challenged the trial court’s rulings on both the motion for judgment on the pleadings and a motion in limine related to evidentiary exclusions. The Pennsylvania Superior Court unanimously affirmed the trial court’s rulings, holding that the tort claims were time-barred and that the plaintiffs had waived their evidentiary argument by failing to properly develop it in their appellate brief.

Thought Leadership

Case Law Alerts

Delaware Superior Court Addresses Continuous Representation Doctrine in Legal Malpractice Case—But Was It Really Applied?

January 1, 2026

In what the court stated was a matter of first impression, the Delaware Superior Court applied the “continuous representation doctrine” in a legal malpractice case. In this case, the plaintiff claimed that his attorneys did not take any meaningful action to prosecute his underlying lawsuit and failed to sufficiently communicate with him. The court dismissed the underlying action sua sponte for failure to prosecute. The plaintiff maintained he first learned that his underlying claims had been dismissed by the Superior Court 18 months after the dismissal. He then commenced his legal malpractice action more than three years after the dismissal. The defendant attorneys moved to dismiss the malpractice claims based on Delaware’s three-year statute of limitations, which, under the occurrence rule, began to accrue at the time of dismissal of the underlying action. The court held that the continuous representation doctrine was applicable because the “cause of action conceivably accrued at some point after the court dismissed the underlying suit” because the attorneys failed to take efforts to reopen the judgment. It appears that the Delaware Superior Court has conflated the “continuous representation doctrine” with the concept of continued negligence. There are some jurisdictions that recognize the continuous representation doctrine, which provides that a legal malpractice cause of action accrues at the end of the underlying representation, irrespective of when the negligence occurred during the representation. Delaware, however, follows the “occurrence rule,” which, in the absence of equitable tolling, provides that a cause of action accrues at the time of the alleged negligence. Here the court properly concluded that the cause of action could be deemed to have accrued after the dismissal of the underlying claims if the plaintiff could demonstrate continued negligence after the dismissal. The court’s use of the phrase “continuous representation doctrine,” however, could lead to confusion as to whether that doctrine is actually applicable in Delaware. The court entertained a motion for re-argument and issued a second opinion, where it made clear that the plaintiff’s claims were not time barred because of allegations of continued negligence. The second opinion did not reference the “continuous representation doctrine”; however, it did not specifically clarify that the doctrine was not applicable.

Case Law Alerts

Delaware Supreme Court Upholds Dismissal of Legal Malpractice Claims Based on Collateral Estoppel

October 1, 2025

The Delaware Supreme Court affirmed the Superior Court’s dismissal of the plaintiffs’ legal malpractice claims under the collateral estoppel doctrine.  The plaintiffs, previously claimants in an underlying class action case as parents of an injured minor child, brought the legal malpractice claim against class counsel, claiming that counsel was negligent by failing to advise them to affirmatively opt out of the class in order to pursue an individual claim, given the nature and extent of the child’s injuries.  The Delaware Supreme Court affirmed the Superior Court’s determination that the claims administrator’s decision in the underlying class action was a final adjudication on the merits by a court of competent jurisdiction as the claim process was an approved process set up by the court in the underlying action.  The collateral estoppel doctrine, often called “issue preclusion,” is a doctrine that prevents a party from re-litigating an issue of fact or law that has already been resolved in a prior proceeding. It is intended to promote finality, conserve judicial resources, and protect parties from the burden of duplicative litigation.   Case Law Alerts, 4th Quarter, October 2025 is prepared by Marshall Dennehey to provide information on recent developments of interest to our readers. This publication is not intended to provide legal advice for a specific situation or to create an attorney-client relationship. Copyright © 2025 Marshall Dennehey, all rights reserved. This article may not be reprinted without the express written permission of our firm.

Firm Highlights

Result

No-Cause Jury Verdict Secured in Wrongful Death Trial

We successfully obtained a no-cause jury verdict in a 13-day wrongful death trial. The decedent, a 59-year-old man, was admitted to the emergency room on February 15, 2019, with complaints of abdominal pain, decreased appetite, and constipation, despite the use of laxatives. The patient did not complain of any nausea, vomiting, or diarrhea. He had a significant medical history including diabetes, hypertension, prior coronary artery stenting, morbid obesity (with past gastric bypass surgery), longstanding ventral hernia, and back pain. A CT scan revealed multiple hernias and a potential closed-loop bowel obstruction, leading to a surgery consultation. Our client, an emergency general surgeon, interpreted that the patient did not have a closed loop or any significant obstruction and recommended non-surgical management. The patient was approved to have clear liquids, and had a vomiting incident shortly after, but our client was not notified. The patient was returned to NPO status, and after improving overnight, he was returned to “clears” and additional medical and renal consults were ordered. Our client did not receive any communications from the residents/nurses of any changes in the patient’s condition. On February 18, 2019, two rapid responses were called due to increased heart rate and vomiting. It is believed that the vomiting resulted in aspiration, causing sepsis, ultimately leading to the patient’s death. During the trial, the plaintiff’s sole medical expert highlighted imaging on the wrong hernia, which called into question all of his opinions in the case. We made key objections related to the expert testimony, limiting what the allegations were, and preventing new allegations from being made. After approximately two and a half hours of deliberating, the jury returned a no-cause verdict. 

Thought Leadership

New Jersey Expands Family Leave Protections Effective July 17, 2026

On January 17, 2026, Governor Murphy signed into law legislation expanding the New Jersey Family Leave Act (NJFLA). Beginning July 17, 2026, significant amendments to the NJFLA will expand job-protected family leave to smaller businesses and more employees across the state. The new law broadens coverage by lowering the threshold for private employers from 30 employees to 15 employees, meaning many smaller businesses will now be subject to the NJFLA. Employees of state and local government agencies will continue to be covered regardless of the size of the employer. The amendments also make it easier for employees to qualify for leave. Under the revised law, an employee will be eligible after three months of employment and at least 250 hours worked during the preceding 12 months, replacing the previous requirement of 12 months of employment and 1,000 hours worked. Currently, New Jersey's Temporary Disability Insurance (TDI) and Family Leave Insurance (FLI) programs provide eligible employees with wage replacement while they are on leave but do not independently guarantee job protection. The recent amendments to the New Jersey Family Leave Act (NJFLA) expand these protections by extending job-protected leave to additional employees. Under the amended law, employees receiving TDI or FLI benefits may be entitled to return to the same position they held before taking leave, or to an equivalent position with the same seniority, status, pay, and benefits. Although the legislation also states that it does not expand or modify an employee's reinstatement rights under the NJFLA, the amendments appear to provide job protection to eligible employees receiving TDI or FLI benefits without requiring them to separately satisfy the eligibility requirements of the NJFLA or the federal Family and Medical Leave Act (FMLA). As a result, some employees may be entitled to longer periods of job-protected leave than were previously available under existing law. With these amendments, New Jersey continues to strengthen workplace protections by expanding access to job-protected family leave for eligible employees. These changes significantly expand access to job-protected family leave and may require employers to update their leave policies, employee handbooks, and HR practices. Notably, employers who were previously not required to administer NJFLA may need to amend their policies and/or create new protocols to come into compliance with the NJFLA. Failure to do so would prove costly, as the penalties for non-compliance are significant.

Thought Leadership

Congress Passes Financial Exploitation Prevention Act

On June 25, 2026, the House passed the Financial Exploitation Prevention Act of 2025 (“the Act”) by a vote of 414 to 2. The Act allows financial advisors and firms to delay suspicious transactions regarding the accounts of clients who are 65 or older, if they believe financial exploitation has occurred or is about to take place. With the advancement of technology and AI, the House’s overwhelming bipartisan passage of the Financial Exploitation Prevention Act represents an important step in strengthening the financial industry’s ability to combat the growing threat of elder financial exploitation. The Act recognizes what advisors have long known that financial professionals are often the first to detect suspicious behavior but have historically lacked clear legal authority to intervene before irreversible financial harm occurs. From the industry’s perspective, the bill accomplishes several important objectives, including the following: (1) Provides a practical “pause button” by allowing financial professionals to temporarily delay certain transaction requests when there is a reasonable belief that a senior or vulnerable adult is being financially exploited; (2) Empowers financial professionals to act by providing greater certainty that firms can act in good faith to protect clients without unnecessary legal risk; and (3) Strengthens investor protection without sacrificing client rights by allowing temporary delays based on a reasonable suspicion of exploitation, which is intended only to allow additional review and not to deny clients access to their money indefinitely. In sum, the Financial Exploitation Prevention Act will equip financial professionals with practical, carefully tailored tools to stop suspected financial exploitation before client assets are lost. By allowing firms to temporarily delay suspicious transactions under defined circumstances, Congress is recognizing the critical role advisors play as the first line of defense against increasingly sophisticated fraud schemes. The Act strikes an appropriate balance between protecting vulnerable investors and preserving individual financial autonomy, while reinforcing collaboration among advisors, families, and law enforcement to combat financial exploitation. The bill now awaits Senate action.

Thought Leadership

Mitigating Long-Tail Liability: Delaware Court Reaffirms Five-Year Workers’ Compensation Deadline

Williamson v. Donald F. Deaven, Inc., No. N25A-07-004 FWW, 2026 LX 252526 (Del. Super. Ct. June 2, 2026) Claimant was involved in a compensable industrial work accident on May 12, 1995, for a low back injury.  Following this, he received compensation for temporary total disability benefits from July 1996 to September 1996 and for sustaining a permanent impairment in 1997 and 1998. For the next 23 years, the claimant continued treatment and paid his own medical bills without submitting them to the employer’s insurer. In November 2021, the claimant filed a petition seeking payment for medical expenses, including prospective surgery and a resulting period of total disability. The employer moved to dismiss the petition, arguing it was barred by Delaware’s five-year statute of limitations (19 Del. C. § 2361(b)). Pursuant to 18 Del. C. § 3914, insurers must provide prompt written notice of the applicable statute of limitations to invoke the five-year deadline. Due to the age of the case, neither party had a comprehensive file of the claim and the Board had archived its file of the matter. The carrier’s computer system retained only bare information indicating that payments occurred and agreements and receipts were filed with the Board in 1997. While the claimant argued that the employer could not prove it provided the mandatory statutory notice, the Hearing Officer recovered the archived file, which contained two “Receipts for Compensation Paid” signed by the claimant. The receipts explicitly contained the required five-year limitation language, which the claimant testified to signing at the hearing. The claimant also attempted to introduce evidence of payments he claimed the employer made, which would have extended the statute of limitations. As a preliminary matter, the hearing officer excluded the testimony about the payments because the claimant did not produce them to the employer. The Board found in favor of the employer and dismissed the claimant’s petition as time-barred. The claimant appealed the Board’s decision, arguing that he never received adequate notice of the statute of limitations and that the hearing officer’s evidentiary ruling was an abuse of discretion. The Court held that the archived, signed receipts constituted substantial evidence that the insurer fulfilled its statutory notice requirements. Therefore, the claimant’s petition was time-barred under the statute of limitations provisions of 19 Del. C. § 2361(b). Furthermore, the Court reinforced strict procedural compliance: it rejected the claimant’s attempts to introduce evidence of payment on appeal, ruling the argument was waived for failure to preserve it while the matter was still before the Board. This recent ruling by the Court underscores the importance and necessity of robust data preservation and precise compliance with notice requirements. For risk managers, employers, and insurers, the decision highlights how tight administrative execution protects against catastrophic long-tail liability.