A party that really blew it gets not only a second but a third chance to correct his mistake

Expert Witness Affidavits and Motion Practice in Long Island and NYC Personal Injury Cases

In the competitive landscape of New York personal injury litigation, the strategic use of expert witnesses can make or break a case. At the Law Office of Jason Tenenbaum, P.C., our experienced Long Island and New York City personal injury attorneys understand that proper timing and presentation of expert testimony is crucial to successful outcomes. Today we examine a fascinating case that demonstrates the courts’ willingness to provide procedural flexibility when justice demands it.

Case Background: When Good Lawyers Make Multiple Mistakes

Mallards Dairy, LLC v E&m Engrs. & Surveyors, P.C., 2010 NY Slip Op 02213 (4th Dept. 2010)

The Initial Procedural Missteps

“Defendant moved for summary judgment dismissing the complaint and, in support of its motion, submitted an expert affidavit. Plaintiff opposed the motion three days before the adjourned return date and failed to include an expert affidavit in its opposing papers. It is undisputed that plaintiff’s opposition to the motion was untimely (see CPLR 2214 ). At oral argument of the motion, plaintiff’s attorney stated that there were several reasons for his failure to include an expert affidavit in opposition to the motion. First, he asserted that he had been “sandbagged” and had “not led to believe that hired .” Second, he asserted that, upon discovering that defendant had submitted an expert affidavit in support of the motion, he “scurried around trying to find one, thought about it, consulted with clients and was unable to do that by the return date.” Third, plaintiff’s attorney asserted that he did not think the case required an expert because his clients were “quite qualified to know what talking about, being in the business that in” and because the matters to be tried were “very simple context things,” such as water flowing downhill. [*2]

The Court’s Unusual Flexibility

Supreme Court reserved decision and, 13 days later, plaintiff’s attorney submitted an expert disclosure, requested an adjournment of the trial based on the fact that a principal of plaintiff would be out of the country, and requested permission to serve a late affidavit from plaintiff’s expert in response to the pending motion. The court granted the request for an adjournment and, in granting plaintiff permission to serve an expert affidavit, the court noted its preference to resolve cases on the merits. Defendant in turn was permitted to serve a reply affidavit, and the court thereafter denied defendant’s motion.

The Appellate Division’s Analysis

Defendant contends on appeal that the court erred in considering plaintiff’s untimely expert affidavit. We reject that contention.
” While a court can in its discretion accept late papers, CPLR 2214 and 2004 mandate that the delinquent party offer a valid excuse for the delay’ … Additional factors relevant when essentially extending the return day by accepting late papers include, among others, the length of the delay and any prejudice” (Associates First Capital v Crabill, 51 AD3d 1186, 1187, lv denied 11 NY3d 702; see generally Foitl v G.A.F. Corp., 64 NY2d 911, 912-913). We conclude that the court neither abused nor improvidently exercised its discretion in considering plaintiff’s untimely expert affidavit. Although the delay was approximately five weeks after the date on which the opposing papers were due, plaintiff specifically requested and was granted permission to serve the late affidavit (cf. Matter of Gustina, 135 AD2d 1124, appeal dismissed 72 NY2d 840, rearg denied 72 NY2d 953). Plaintiff’s attorney offered an excuse for the delay (see e.g. Associates First Capital, 51 AD3d at 1187-1188; Radaelli v City of Troy, 229 AD2d 882, 883), and any prejudice was alleviated when defendant was permitted to submit a reply affidavit in response to plaintiff’s late submission (see e.g. Vlassis v Corines, 254 AD2d 273; Kavakis v Total Care Sys., 209 AD2d 480).”

Jason’s Analysis: A Cautionary Tale with an Unusual Ending

Here is my summary of this one. An attorney alleges he was sandbagged and short served. Fair enough, it happens all the time. The attorney presumably had a chance to adjourn the matter, but instead submits papers that are tardy. Strike one. His papers are missing an expert affidavit even though the issue presumably requires same. Strike two. Now this is where it gets really bizarre. Attorney contacts chambers two weeks after the papers are submitted and requests to include an expert affidavit to supplement his motion. This is so despite his acknowledgment to Supreme Court that he did not think he needed an affidavit. Even stranger: the court grants the request. The movant, however, is allowed to put reply in, and it is assumed that this removes any taint or prejudice from this issue. Yet, the movant is probably screaming bloody murder and something else.

More good news: The motion is denied since the conflicting expert affidavits raise a triable issue of fact. What is even stranger is that the Fourth Department condoned this procedure.

By the way, does all of this sound familiar?

Understanding Motion Practice in Long Island and NYC Courts

This case provides valuable insights into the procedural dynamics of New York State courts, particularly in Nassau County, Suffolk County, and the five boroughs of New York City. For personal injury attorneys practicing in these jurisdictions, understanding when courts will exercise discretion to accept late submissions is crucial.

The Legal Framework for Late Paper Submissions

Under CPLR 2214 and CPLR 2004, New York courts have discretion to accept late papers, but this discretion is not unlimited. Courts must consider several factors when determining whether to accept untimely submissions:

1. Valid Excuse for Delay: The delinquent party must provide a reasonable explanation for the delay
2. Length of Delay: Courts consider how late the submission is and whether the delay is reasonable under the circumstances
3. Prejudice to Opposing Party: Whether the opposing party will be unfairly disadvantaged by accepting the late papers
4. Court’s Preference for Merit-Based Decisions: Courts generally prefer to decide cases on their merits rather than on procedural defaults

Strategic Considerations for Long Island and NYC Personal Injury Attorneys

The Mallards Dairy case offers several important lessons for personal injury practitioners in the New York metropolitan area:

The Importance of Timely Expert Disclosure

In complex personal injury cases involving medical malpractice, construction accidents, or product liability, expert testimony is often essential. This case demonstrates that while courts may sometimes show mercy to attorneys who miss deadlines, relying on such mercy is never a sound litigation strategy.

When to Request Adjournments

Rather than submitting deficient papers on time, attorneys facing tight deadlines should consider requesting adjournments when additional time is needed to properly prepare expert testimony or other crucial evidence. Courts are generally more receptive to reasonable requests for additional time than to excuses after the fact.

Responding to “Sandbagging” Tactics

The plaintiff’s attorney’s claim of being “sandbagged” by the defendant’s expert affidavit raises important strategic considerations. In Long Island and NYC personal injury practice, attorneys must:

• Carefully review all motion papers immediately upon receipt
• Maintain relationships with qualified experts who can respond quickly
• Build sufficient time into case schedules to respond to unexpected expert submissions
• Consider seeking discovery of potential expert witnesses early in litigation

The Role of Expert Witnesses in New York Personal Injury Cases

Expert testimony plays a critical role in many personal injury cases, particularly those involving:

• Medical malpractice claims requiring testimony about standards of care
• Construction accident cases involving safety regulations and engineering standards
• Product liability claims requiring technical analysis of defective products
• Motor vehicle accidents involving accident reconstruction
• Premises liability cases requiring analysis of building codes and safety standards

Best Practices for Expert Witness Management

Based on our extensive experience in Long Island and New York City personal injury litigation, several best practices emerge for effective expert witness management:

1. Early Identification: Identify potential expert witnesses early in the case development process
2. Retainer Agreements: Secure expert witnesses with appropriate retainer agreements to ensure availability
3. Regular Communication: Maintain regular communication with experts throughout the litigation process
4. Deadline Management: Build expert disclosure and affidavit deadlines into case management systems
5. Backup Plans: Maintain relationships with multiple experts in each relevant specialty

Court Discretion and Fairness in New York Practice

The Mallards Dairy decision illustrates that New York courts, including those in Nassau, Suffolk, and New York City, retain significant discretion to ensure fairness in litigation. However, attorneys should not rely on this discretion as a substitute for proper case management and timely compliance with procedural requirements.

Factors Courts Consider When Exercising Discretion

When faced with requests to accept late submissions, New York courts typically consider:

• The strength of the excuse offered for the delay
• The length and nature of the delay
• Whether the opposing party can be adequately protected from prejudice
• The court’s interest in deciding cases on their merits
• The overall conduct of the parties during litigation

Lessons for Personal Injury Practice

The unusual procedural history in Mallards Dairy provides several important takeaways for personal injury attorneys practicing in Long Island and New York City:

Don’t Rely on Court Mercy

While this case had a positive outcome for the plaintiff, relying on judicial discretion to cure procedural defaults is never a sound strategy. Courts may not always be as forgiving, particularly when dealing with repeat offenders or cases where prejudice to the opposing party cannot be easily remedied.

Prepare for the Unexpected

The plaintiff’s attorney’s claim of being “sandbagged” highlights the importance of being prepared for unexpected developments in litigation. Successful personal injury attorneys maintain networks of qualified experts and build flexibility into their case schedules.

Know When to Cut Your Losses

The attorney’s initial belief that expert testimony was unnecessary demonstrates the importance of realistic case assessment. When facing summary judgment motions supported by expert testimony, responding in kind is typically necessary to create triable issues of fact.

Frequently Asked Questions About Expert Witnesses and Motion Practice

What happens if I miss a deadline for submitting an expert affidavit?

Missing deadlines for expert affidavits can seriously compromise your case. While courts have discretion to accept late submissions, you must provide a valid excuse and demonstrate that the opposing party won’t be prejudiced. It’s always better to request an extension before the deadline passes.

How should I respond if opposing counsel surprises me with an expert affidavit?

First, carefully review the expert’s qualifications and opinions. If you believe expert testimony is necessary to respond, immediately begin seeking qualified experts. Consider requesting an adjournment if you need additional time to properly respond rather than submitting inadequate papers.

Can courts really accept papers weeks after they’re due?

Yes, but this should never be relied upon. As the Mallards Dairy case shows, courts can accept papers weeks late when there’s a valid excuse and no unfair prejudice to the opposing party. However, each case is different, and many courts are less forgiving.

What makes a valid excuse for missing a deadline?

Valid excuses typically include genuine emergencies, serious illness, court conflicts, or situations where opposing counsel’s conduct prevented timely compliance. Being “too busy” or “forgetting” about deadlines are not valid excuses.

Why Choose the Law Office of Jason Tenenbaum, P.C. for Your Personal Injury Case?

When facing complex personal injury litigation in Long Island or New York City, you need attorneys who understand both the substantive law and the procedural nuances that can make or break your case. Our experienced legal team offers:

• Extensive Expert Networks: We maintain relationships with qualified experts in all relevant specialties
• Meticulous Case Management: Our systems ensure compliance with all deadlines and procedural requirements
• Strategic Motion Practice: We understand when to fight, when to negotiate, and when to seek court intervention
• Local Court Knowledge: Our attorneys are familiar with the practices and preferences of Nassau, Suffolk, and NYC courts

Don’t let procedural missteps derail your personal injury case. The stakes are too high, and the opposition too prepared. Contact the Law Office of Jason Tenenbaum, P.C. today at (516) 750-0595 to discuss your case with experienced Long Island and New York City personal injury attorneys who know how to win. We’re here to fight for your rights and secure the compensation you deserve.

Related Articles

• Single Motion Rule and Statute of Limitations: Long Island & NYC Legal Guide
• It takes more than a mere allegation that a signature is not holographic in order to invoke the “stamped signature” rule. Also, a form defect can be fixed in reply.
• The CPLR 2106 Trap: Why Medical Practice Owners Must Avoid This Critical Procedural Error
• Causation, Renewal and a probable trip to the Court of Appeals
• New York No-Fault Insurance Law

---

Legal Update (February 2026): The CPLR provisions governing motion practice and expert witness disclosure discussed in this 2010 post may have been subject to amendments or revised interpretations since publication. Additionally, courts’ approaches to granting extensions and relief from procedural defaults may have evolved, particularly regarding electronic filing requirements and timing provisions. Practitioners should verify current CPLR 2214 and 2004 requirements and consult recent appellate decisions for current standards on procedural flexibility in expert witness matters.