A. Prieto v. Police Officer D. Mammula

CourtCommonwealth Court of Pennsylvania
DecidedApril 2, 2026
Docket1517 C.D. 2024
StatusUnpublished
AuthorLeavitt

This text of A. Prieto v. Police Officer D. Mammula (A. Prieto v. Police Officer D. Mammula) is published on Counsel Stack Legal Research, covering Commonwealth Court of Pennsylvania primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
A. Prieto v. Police Officer D. Mammula, (Pa. Ct. App. 2026).

Opinion

IN THE COMMONWEALTH COURT OF PENNSYLVANIA

Andres Prieto, : Appellant : : v. : No. 1517 C.D. 2024 : Argued: February 4, 2026 Police Officer Daniel Mammula, : Police Officer Dedos, Police Officer : Douglas Miller, Police Officer : Michael Pezzeca, Police Sgt. Vincent : Perone, Police Sgt. James Graber, : and the City of Philadelphia :

BEFORE: HONORABLE MICHAEL H. WOJCIK Judge HONORABLE LORI A. DUMAS, Judge HONORABLE MARY HANNAH LEAVITT, Senior Judge

OPINION NOT REPORTED

MEMORANDUM OPINION BY SENIOR JUDGE LEAVITT FILED: April 2, 2026

Andres Prieto (Prieto) has appealed orders of the Court of Common Pleas of Philadelphia County (trial court) that granted summary judgment to police officers Daniel Mammula, Dedos, Douglas Miller, Michael Pezzeca, Vincent Perone, and James Graber (collectively, Officers). The trial court also denied Prieto’s petition for leave to amend complaint. On appeal, Prieto argues that the trial court erred in these two rulings. Upon review, we affirm. Background On March 28, 2023, Prieto filed a complaint against Officer Daniel Mammula (Mammula), several John Doe defendants, and the City of Philadelphia (City)1 (Complaint). In Count One, the Complaint alleged that on February 1, 2022,

1 The City filed preliminary objections. The trial court sustained the preliminary objections and dismissed the City from suit with prejudice. at approximately 9:00 p.m., at or near the intersection of 34th Street and Haverford Avenue in the City, Mammula and the John Doe defendants stopped Prieto to arrest him. “After stopping and handcuffing [Prieto],” Mammula and the John Doe defendants “beat [Prieto], kicking him and punching him several times and causing him to have [] injuries[]” including “facial lacerations and a fractured sternum which required surgery.” Complaint, ¶¶7, 9; Reproduced Record at 6a-7a (R.R. __). The Complaint alleged that at the time of the incident, Prieto “did not resist the police officers in any way nor did he do anything that justified the beating described above.” Complaint, ¶8, R.R. 7a. The Complaint asserted that Mammula and the John Doe defendants committed assault and battery. Complaint, ¶10, R.R. 7a. Count I sought compensatory damages. Count II sought punitive damages. On April 25, 2023, Prieto served Mammula with interrogatories and requests for production of documents including, but not limited to, “[a]ny and all photographs or diagrams in any way related to this incident(s) described in [the C]omplaint[,]” and “[a]ny and all records concerning the arrest or detention of [Prieto] on or about February 1, 2022 to February 2, 2022 which arrest/detention is the subject of the instant lawsuit.” R.R. 49a-50a. The request defined “document,” in relevant part, as “any means by which information is recorded or retained, including, without limitation, originals, non-identical copies, drafts, or electronic or computer data storage.” R.R. 49a. Upon not receiving answers, Prieto filed a motion to compel discovery, which was granted by the trial court on July 17, 2023. Still, Mammula did not answer the discovery. On August 21, 2023, Prieto filed a motion for sanctions for failure to abide by discovery orders. The trial court granted the motion on September 7, 2023.

2 When Mammula still had not responded to discovery, Prieto filed a motion for further sanctions. On October 4, 2023, Mammula, through counsel, sent discovery materials to Prieto. However, these discovery materials did not include body camera videos. On October 18, 2023, Prieto filed an amended complaint (Amended Complaint), identifying the John Doe defendants by their correct names, including James Graber (Graber). The counts and allegations remained the same. On February 22, 2024, Officers’ counsel sent Prieto Graber’s body camera videos of the incident covered in the Amended Complaint. On August 30, 2024, Graber and the other Officers filed motions for summary judgment. The record showed that on February 1, 2022, Officers responded to a 911 call reporting a “person with a gun” at an apartment building located at 3416 Haverford Avenue. Graber Motion for Summary Judgment, ¶7; R.R. 103a. The video footage showed that, upon entering the premises, Graber observed Prieto “yelling, screaming[,]” “banging on numerous apartment doors[,]” and holding an unidentified object in his hand. Id., ¶¶8, 11; R.R. 103-04a. Graber announced himself as a police officer and asked Prieto to calm down and stop moving, but Prieto continued to run down the apartment hallway, yelling “unintelligible” words. Id., ¶¶10, 12; R.R. 104a. Graber drew his taser and followed Prieto, who exited the apartment building. The Amended Complaint alleged that the Officers kicked and punched Prieto several times, thereby injuring him. Amended Complaint, ¶9; R.R. 80a. However, the video footage showed that Graber used his taser, causing Prieto to fall “into the snow on the sidewalk[.]” Graber Motion for Summary Judgment, ¶21; R.R. 105a. Prieto continued to resist after the backup officers arrived, and Graber tased him a second time. Id., ¶26; R.R. 106a. The officers then “rolled [Prieto] over

3 on his stomach and handcuffed him.” Id., ¶27; R.R. 106a. Graber’s motion asserted that summary judgment was appropriate because the body camera showed that the police did not kick or punch Prieto, “which is the only claim for excessive force asserted in the complaint.” Id., ¶35; R.R. 107a. Because there was no genuine issue of material fact with respect to the alleged use of excessive force, Graber asked that Prieto’s claims against him be dismissed with prejudice. Id. On September 26, 2024, Prieto filed a petition for leave to amend complaint. In the petition, Prieto alleged that he was “under the influence at the time of the incident and believed he had been punched and kicked because of the severity of his injuries[.]” Petition to Amend, ¶3; R.R. 253a. After viewing the police body camera videos, Prieto learned that Graber “tased him several times without reasonable basis, thereby causing [Prieto] to be thrown to the ground and striking hard ice causing the fracture.” Id. The amendment to the Amended Complaint would provide “accurate allegations of the unlawful acts of [the Officers] which caused [Prieto’s] injuries.” Petition to Amend, ¶4; R.R. 253a. On October 21, 2024, the trial court denied Prieto’s petition for leave to amend complaint. On the same date, the trial court granted Graber’s and the other Officers’ motions for summary judgment and dismissed all claims against the defendants with prejudice. Prieto appeals to this Court. Trial Court Opinion In its Pa.R.A.P. 1925(a) opinion, the trial court explained its rationale as follows. Motions to amend pleadings are to be granted liberally, but this does not mean that litigants have free rein to alter their theories of the case at any point in the litigation. “Only if the proposed amendment merely amplifies, as opposed to

4 altering, the cause of action already averred, will it be allowed if the statute of limitations has run.” Trial Court Pa.R.A.P. 1925(a) Op. at 2; R.R. 548a (quoting Chaney v. Meadville Medical Center, 912 A.2d 300, 304 (Pa. Super. 2006)). Here, the statute of limitations had run on February 1, 2024. However, Prieto’s proposed amendment did not amplify but, rather, “attempted to alter the claim from an alleged beating comprised of punches and kicks (which admittedly did not occur) to, for the first time alleging that [Prieto] was excessively and unlawfully tased[.]” Trial Court Pa.R.A.P. 1925(a) Op. at 2; R.R. 548a. The trial court also took issue with Prieto’s argument that Officers’ counsel did not provide him with Graber’s body camera video footage until February 15, 2024, after the statute of limitations had run.

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A. Prieto v. Police Officer D. Mammula, Counsel Stack Legal Research, https://law.counselstack.com/opinion/a-prieto-v-police-officer-d-mammula-pacommwct-2026.