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Ana M. McCann

Portrait of Ana M. McCann

As a member of the Casualty Department, Ana focuses on handling asbestos, lemon law/breach of warranty and general liability cases. She has drafted and argued numerous dispositive motions, defended clients at arbitration hearings, deposed fact and expert witnesses, and negotiated advantageous settlements on behalf of her clients.

After graduating from Seton Hall University in 1996, Ana was employed as a client services specialist for a health insurance company in Piscataway, New Jersey. In 1999, she enrolled in Widener University School of Law, where she received her juris doctor in 2002. 

Ana served as a judicial clerk in the Superior Court of New Jersey in 2002-2003. During her clerkship, she served as a mediator for the court, where she mediated landlord/tenant disputes, contract disputes and accident claims.

Ana joined Marshall Dennehey in 2003 in the firm's Wilmington, Delaware, office, and is licensed to practice in Delaware, New Jersey and Pennsylvania.

    • Widener University Delaware Law School (J.D., 2002)
    • Seton Hall University (B.A., 1996)
    • Delaware, 2003
    • New Jersey, 2003
    • U.S. District Court District of Delaware, 2010
    • Pennsylvania, 2025
    • Certificate of Achievement - Seminar: HIV/AIDS & The Law
    • Delaware State Bar Association
    • "Delaware Superior Court Finds That No Duty Extends To Spouse/Household Members Of Employees Exposed To Asbestos," Defense Digest, March 2008
    • "Delaware's Ban On Court Reporter Contracts," Defense Digest, September 2004

Results

Thought Leadership

Defense Digest

Delaware Supreme Court’s Reversal of Trial Court Decision on Zantac Expert Testimony May Carve a Path for Heightened Scrutiny of Experts in Asbestos Litigation

December 1, 2025

Key Points:  Supreme Court held that trial court misinterpreted the plaintiffs’ burden by stating Delaware Rule of Evidcen 702 should be applied with a liberal thrust favoring admission. Supreme Court ruled that the plaintiffs failed to show by preponderance of the evidence that their experts’ opinions were reliable. Court emphasized that “an expert offering an opinion regarding general causation for a product must opine as to the product itself,” not the toxicity of some individual component. Court observed that there is no consensus in Delaware law as to “threshold dose.” As of September 2022, there were approximately 75,000 pending Zantac (ranitidine) cases in Delaware, coming from more than a dozen national plaintiffs’ firms and with three Delaware firms acting as local counsel. These cases were filed in the Superior Court of Delaware. The plaintiffs in In re: Zantac (Ranitidine) Litig., 2025 WL 1903760 (Del. 2025) alleged that their ingestion of the molecule ranitidine—marketed under the brand name Zantac, in which N-Nitrosodimethylamine (NDMA), an alleged carcinogen, may be found—caused the cancer with which they were diagnosed. In November 2023, the defendants moved to exclude the plaintiffs’ general causation experts under Delaware Rule of Evidence 702 (DRE 702), which is modeled after Federal Rule of Evidence 702 (FRE 702), and the principles set forth in Daubert v. Merrell Dow Pharms., Inc., 509 U.S. 579 (1993), which determine whether expert testimony is admissible. Daubert reiterates the requirements of FRE 702 by stating that expert opinions must be the product of a reliable process measured by things like peer review and general acceptance in the scientific community. Daubert also states that judges should act as gatekeepers to ensure that potential expert opinions are both reliable and relevant before they can be heard by a jury.  The defendants’ principal arguments were that (1) the original lab study was an outlier, conducted under unrealistic conditions, and the results were never duplicated; (2) the plaintiffs’ experts failed to offer threshold-dose opinions; and (3) the plaintiffs’ experts inappropriately focused on toxicity of NDMA itself as opposed to causation associated with ranitidine use. The trial court denied the defendants’ Rule 702 motion, finding that (1) the studies focused on NDMA toxicity were sufficient to establish general causation—ignoring the defendants’ argument that no studies show a connection between ranitidine use and cancer; (2) Delaware law does not “recognize a threshold-dose requirement as part of the general causation analysis”; and (3) Delaware law requires a trial court to apply a “liberal thrust” favoring admissibility of expert testimony. Consistent with this liberal-thrust standard, the court dismissed each of the defendants’ critiques of the plaintiffs’ experts, stating that they went to weight rather than admissibility and, therefore, were jury questions.  The defendants requested that the Superior Court certify its order for an interlocutory appeal. The Superior Court denied certification. However, the Supreme Court of The State of Delaware reviewed and granted the request.  The Supreme Court acknowledged that evidentiary rulings are rarely appropriate for interlocutory review, but it noted that the trial court’s decision raised substantial issues regarding the Daubert standard and mass tort litigation specifically. Further, recognizing the significance of the issues, the Supreme Court elected to hear the case en banc. The appellants raised three claims on appeal:  (1)    The Superior Court applied an unduly lenient standard and wrongly held that all methodological critiques went to weight, not admissibility. Specifically, the appellants argued that an analysis under DRE 702 should not be conducted with a “liberal thrust favoring admission” and that it is a trial court’s duty to ensure that an expert applies his or her methodology reliably; (2)    The Superior Court erred in focusing its general causation analysis on NDMA, rather than ranitidine; and  (3)    The Superior Court erred in holding that the plaintiffs’ experts did not need to identify the threshold dose required to cause the cancers at issue. On July 10, 2025, the Supreme Court reversed the trial court’s ruling on several grounds.  First, the court held that the trial court misinterpreted the plaintiffs’ burden by stating DRE 702 should be applied with a liberal thrust favoring admission. The court stressed that Daubert never created a presumption of admissibility. Instead, they opined that “the proponent of an expert opinion must prove its admissibility by a preponderance of the evidence” with no presumption toward admissibility.  After clarifying the burden of proof, the Supreme Court took a deep dive into the underlying studies. The court noted several instances where the plaintiffs’ experts ignored—without explanation—major peer-reviewed epidemiology studies in favor of lower-quality and less-relevant publications. In doing so, the court affirmatively ruled that the plaintiffs failed to show by preponderance of the evidence that their experts’ opinions were reliable.  The Supreme Court also found that the trial court erred by framing the general-causation question on the alleged carcinogenic agent—NDMA—rather than the actual product at issue—ranitidine. The court emphasized that “an expert offering an opinion regarding general causation for a product must opine as to the product itself,” not the toxicity of some individual component. Having held that the plaintiffs’ experts’ opinions were deficient, the court determined that it did not need to reach the separate “threshold dose” question the defendants raised on appeal, but it observed that “there is no consensus in Delaware law as to ‘threshold dose.’” There are several takeaways from the Supreme Court’s ruling that may be relevant to asbestos litigation.  First, with the Delaware Supreme Court clarifying a preponderance-of-the evidence standard (with no presumption of admissibility) over the previously understood “liberal thrust favoring admission,” plaintiffs’ and defense experts are likely to face heightened scrutiny.  Further, it now appears that experts offering causation opinions “must opine as to the product itself,” as opposed to asbestos toxicity generally. Plaintiffs may likely be required to show that exposure to a specific product has a higher rate of developing asbestos disease. This may pose a potentially significant obstacle for plaintiffs when asbestos fibers are encapsulated within a product.  Defense Digest, Vol. 31, No. 4, December 2025, is prepared by Marshall Dennehey to provide information on recent legal 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. ATTORNEY ADVERTISING pursuant to New York RPC 7.1. © 2025 Marshall Dennehey. All Rights Reserved. This article may not be reprinted without the express written permission of our firm. For reprints, contact tamontemuro@mdwcg.com.

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

Legal Update for Special Education Law: Recent Positive Outcomes From the Group

Hearing Officer Confirms District Acted Appropriately Under IDEA and Section 504 William J. McPartland (Scranton) obtained a finding in favor of our client, a school district, on all issues following a due process hearing. The parent had filed a due process complaint alleging that the school district had breached its child find duty under the IDEA and Section 504, that the school district had discriminated against the student on the basis of disability in violation of Section 504, and that the school district had denied a free and appropriate public education to the student both by developing inadequate IEPs and via an actionable procedural violation.  Specifically, the student had received a Section 504 evaluation in October 2023, after a number of behavioral infractions culminating in a fight in September 2023, was identified as having anxiety and a sleep disorder, and received appropriate Section 504 accommodations. The student had never previously demonstrated signs of a learning disability, and the parent denied the school district permission to evaluate the student for special education needs in November 2023, and January 2024. The parent granted the district permission to evaluate the student in October 2024, after a private psychologist diagnosed the student with Attention Deficit Hyperactivity Disorder, possible Oppositional Defiance Disorder, a learning disorder, and anxiety. The school district issued a special education evaluation report in December 2024, finding that the student had an emotional disturbance and other health impairment, and an IEP providing an itinerant level of emotional support, as well as instruction in academics and social skills, was issued in January 2025, and amended in February, March, and April 2025. The student withdrew from the school district in April 2025, to attend a cyber charter school. The hearing officer determined that the school district had not violated its child find duty to the student in violation of either the IDEA or Section 504 where the district developed a Section 504 plan for the student within a month and a half of the parent’s first request for a Section 504 evaluation and where the parent repeatedly denied consent to conduct an IDEA evaluation of the student. The hearing officer noted that the student’s sporadic record of behavioral infractions prior to September 2023, did not suggest that the student had a disability prior to the parent’s initial request for an evaluation. The hearing officer further determined that no evidence had been produced to suggest that the student was discriminated against on the basis of disability in violation of Section 504. Additionally, the hearing officer determined that the IEP offered to the student was substantively adequate and that, to the extent the social and emotional programming offered by the school district was not received by the student, this resulted from the parent’s refusal to accept the same. The hearing officer finally determined that the school district did not commit an actionable procedural violation by delaying development of an IEP for the student where the parent repeatedly denied consent to evaluate the student. Court Dismisses Three of Four Claims Against School District Christopher J. Conrad and Daniel P. McGannon (Harrisburg) achieved a significant early victory on behalf of a school district client in. The team successfully obtained dismissal of three of the four claims asserted in the plaintiff’s amended complaint. The former district superintendent brought multiple claims arising out of his alleged “forced resignation,” including age discrimination under the ADEA, a Section 1983 Equal Protection claim, a Pennsylvania Whistleblower claim, and breach of contract. On behalf of the district, the defense team moved to dismiss the complaint in part, arguing: The plaintiff failed to plead sufficient facts to support a prima facie case of age discrimination. The equal protection claim was barred because the ADEA provides the exclusive federal remedy for age-based employment claims. The breach of contract claim could not stand because the underlying employment agreement had expired prior to the alleged breach. The court agreed, dismissing the ADEA, equal protection, and breach of contract claims in their entirety. As a result, only a single claim under the Pennsylvania Whistleblower Law remains pending. This outcome substantially narrows the scope of the litigation and positions the client for a more efficient defense moving forward.

Thought Leadership

What’s Hot in Workers’ Comp - News and Results*

RESULTS* Eric Scott Thompson (Wilmington) was successful in a workers’ compensation matter in Delaware. On October 15, 2024, the claimant was injured while performing fire training in a multistory building when he tripped over a fire line, injuring his right knee. The claimant received regular and consistent treatment for the right knee through August 29, 2025, when he presented with left knee complaints for the first time. His treating orthopedist diagnosed a hamstring strain. The claimant was next seen October 15, 2025, with continued left knee complaints, and was referred to a total knee doctor within the practice. He was then diagnosed with a posterior root tear of the medial meniscus. Our expert testified that it was not plausible for a lateral hamstring strain to progress to a meniscal tear in two months. The claimant required a total knee replacement that was ultimately performed in February 2026. In the six months between the time of initial presentation with left knee complaints and the total knee replacement, conservative care consisted of a single injection. Our expert testified that posterior root media meniscal tears can respond to conservative care, and it was not known if it would with the claimant because it was not adequately explored. The Industrial Accident Board agreed with our expert and determined that the claimant failed to meet the burden of establishing more likely than not that the left knee complaints were caused by overloading/overuse as a result of the compensable injury to the right knee. They also agreed that the claimant was able to return to work in a sedentary capacity as opined by his physicians and our expert prior to the left total knee replacement and that there were employment opportunities available within his restrictions and capabilities as presented by the vocational expert. As a result, the claimant is no longer entitled to total disability benefits and will receive partial disability benefits for which he is limited to 300 weeks. Michele Punturi (Philadelphia) and Alana Staniszewski (Pittsburgh) had a termination petition granted in a Pennsylvania workers’ compensation case. The petition involved an echocardiography technologist with long-term employment at a local hospital who sustained a right shoulder injury resulting in surgery in January 2024. Following surgery, the claimant was diagnosed with a frozen shoulder and underwent additional surgery in June 2024, with a recommendation for a third surgery. The opinions of the defense medical expert, a Board-certified orthopedic surgeon, were found credible, persuasive, and competent based upon the extensive history he obtained from the claimant, analysis of the mechanism of injury, and review of records, along with comparison of MRIs from October 2023, February 11, 2024, and January 6, 2025, which failed to reveal any causal relationship other than a strain/sprain of the right shoulder. This evidence supported that the claimant had fully recovered, and was not in need of any ongoing medical treatment and/or restrictions. In particular, despite allegations of injuries beyond a sprain/strain, the defense medical expert identified that those allegations were not consistent with what was found at the time of surgery, and elements of the surgery were to treat a chronic and degenerative condition. Additionally there were no ongoing issues or problems with the subscapularis, which was intact, consistent with the follow-up MRI of February 11, 2024, and the claimant did not have evidence of a frozen shoulder. In fact, the MRIs and mechanism of injury, he opined, did not support any injury causing tendonitis or inflammatory conditions within the bicep tendon. Furthermore, multiple days of surveillance footage demonstrated the claimant’s normal use, with the ability to sweep and shovel snow, operate her vehicle, raise her arms above shoulder level, and use a broom – all without any observable difficulty, which challenged the claimant’s credibility of a disability and further established a lack of causation. As a result of this favorable decision, supersedeas fund reimbursement will be obtained for both wage loss and medical benefits through the supersedeas fund recovery process. Tony Natale III (King of Prussia) had a termination petition granted involving a claimant who sustained a lower back injury. He was treated by a physician who immediately referred him for a $6,500 per month steady diet of TENS unit and supplies. The employer filed a termination petition based on a full recovery opinion from an orthopedic surgeon. The claimant continued to treat during the litigation with the electronic supplies. Expert testimony demonstrated that the claimant had no reproducible lower back problems and had fully recovered from the work injury. The court granted  a complete defense verdict. Tony Natale III (King of Prussia) successfully had a termination petition granted by the Berks County Workers’ Compensation Court. The claimant suffered multiple upper extremity injuries which relegated him to light duty paper work. Several years later, the employer was able to retrieve a full recovery opinion on the hand/wrist and shoulder injuries. The claimant presented testimony that he could not even raise a glass of water without pain. Medical expert testimony was presented by the employer, which shrouded the claimant’s allegations of disability in serious doubt. The claimant’s hands and arm had no muscular atrophy and were covered in dirt and callouses, demonstrating that he was working and using his hands. The court granted a full defense verdict. Tony Natale III (King of Prussia) achieved a defense verdict in a Medicare conditional lien suit. The Center for Medicare & Medicaid Services (CMS) filed a conditional lien payment request to the PIP insurer. The government contractors for CMS denied the insurer’s first- and second-level appeal and awarded the lien with interest. The matter was referred for handling of the third-level appeal, which moved from a government contractor to the court. At the hearing, it was proffered that the government violated the relevant statute of limitations on the prosecution of the conditional lien. The government alleged a six-year limitations period pursuant to the Secondary Payer Act. In response, it was demonstrated that a three-year limitations period controlled under the correct section of the statute and the government was misapprehending the correct limitations period. The court agreed and dismissed the lien for a complete defense verdict. Tony Natale III (King of Prussia) successfully had a workers’ compensation termination petition granted in a matter in which the claimant had an adjudicated right elbow injury. The claimant expert attempted to allege a different elbow injury than what had previously been adjudicated in order to defeat the termination petition. Res Judicata objections were sustained since the same expert tried to amend the nature of injury in previous litigation and was unsuccessful. The court granted a complete defense verdict. Alana Staniszewski (Pittsburgh) successfully defended an Appeal to the Workers’ Compensation Appeal Board, which challenged the Judge’s complete denial of the Claimant’s Claim Petition. The judge wholly credited the Employer’s surveillance footage and Employer witness testimony which directly contradicted the Claimant’s testimony. Through brief and oral argument, Alana argued that Claimant’s appeal attempted to impermissibly challenge the judge’s authority as the sole arbiter of credibility and emphasized that the judge was free to draw reasonable inferences from the evidence of record. Alana Staniszewski (Pittsburgh) successfully defended against a claimant’s appeal to the Workers’ Compensation Appeal Board, which challenged the WCJ’s complete denial of the claimant’s claim petition. In the underlying litigation, the WCJ wholly credited the employer’s surveillance footage and the employer witness testimony, which directly contradicted the claimant’s testimony. Finding that the claimant’s testimony and version of events lacked credibility, the WCJ opined that the claimant had failed to satisfy his burden of proof to establish a work-related injury and entitlement to workers’ compensation benefits. The claimant filed an appeal arguing that the WCJ’s findings were not supported by substantial, competent evidence, that the WCJ failed to issue a reasoned decision, and that he erred in denying the claim petition. The claimant argued that the WCJ drew impermissible inferences from the evidence offered by the defense. Through a brief and oral argument before the WCAB, we argued that the claimant’s appeal attempted to impermissibly challenge the WCJ’s authority as the sole arbiter of credibility and emphasized that the WCJ was free to draw reasonable inferences from the evidence of record. The WCAB accepted our arguments and wholly rejected the claimant’s appeal. The WCAB affirmed the WCJ’s decision and order in its entirety, affirming our successful defense against the claimant’s claim petition, solidifying a complete defense victory. *Prior Results Do Not Guarantee a Similar Outcome