Banyan v. Sikorski: Claim Abandonment at Summary Judgment and Probable Cause Grounded in Eyewitness Identification Despite Later Non‑Indictment

Introduction

In Banyan v. Sikorski (Second Circuit, Apr. 21, 2026) (summary order), Plaintiff-Appellant Jonathan C. Banyan appealed (i) adverse summary-judgment rulings on § 1983 false arrest and excessive force claims and a New York malicious prosecution claim, and (ii) two trial evidentiary rulings made in his remaining excessive force case.

The dispute arose from Banyan’s arrest after an anonymous complainant reported that three men had robbed/assaulted his friend and identified Banyan as the thief. Banyan struggled with officers during the arrest. His state criminal case was ultimately dismissed on speedy-trial grounds after the First Department reversed a conviction and ordered a new trial due to a jury-instruction error. People v. Banyan, 187 A.D.3d 643, 644 (1st Dep't 2020).

The key issues on appeal were: (1) whether Banyan abandoned certain excessive-force claims at summary judgment by failing to address them; (2) whether officers had probable cause to arrest based on the complainant’s identification and matching description; (3) whether probable cause (including the indictment presumption) defeated malicious prosecution; and (4) whether the district court abused its discretion by admitting Banyan’s prior firearm conviction (Rule 609) and a precinct video depicting his post-arrest behavior (Rules 403/404).

Summary of the Opinion

The Second Circuit affirmed the district court’s judgment in full. It held that:

Summary judgment dismissing excessive-force claims against two officers was proper because Banyan abandoned those claims by not responding to defendants’ arguments.
The officers had probable cause to arrest Banyan based on the complainant’s eyewitness identification and a detailed, matching description; later grand-jury non-indictment on some charges did not negate probable cause.
Banyan’s malicious prosecution claim failed because probable cause supported both indicted and unindicted counts; he did not rebut the indictment-based presumption with evidence of fraud, perjury, suppression, or bad faith.
The trial court did not abuse its discretion in admitting (a) Banyan’s prior conviction for impeachment under Rule 609 and (b) the precinct video as non-propensity evidence relevant to his post-incident condition, with limiting instructions.

Analysis

Precedents Cited

1) Standards of review and abandonment/waiver at summary judgment

Kuebel v. Black & Decker Inc., 643 F.3d 352, 358 (2d Cir. 2011): Reiterates de novo review of summary judgment, viewing evidence in the nonmovant’s favor. The panel applied this baseline lens to Banyan’s challenges.
Brown v. City of New York, 862 F.3d 182, 187 (2d Cir. 2017): Holds that waiver/abandonment determinations are reviewed for abuse of discretion. This mattered because the district court treated Banyan’s silence as abandonment.
Jackson v. Fed. Exp., 766 F.3d 189, 198 (2d Cir. 2014): Authorizes courts, for counseled parties, to infer abandonment where a party partially opposes summary judgment but fails to defend certain claims. The panel used Jackson to uphold dismissal of the excessive-force claims against Rule and Becerra: Banyan did not address specific arguments about baton and taser use.

2) Probable cause and eyewitness identifications; effect of non-indictment

Kee v. City of New York, 12 F.4th 150, 158-59 (2d Cir. 2021): “Any crime” rule—probable cause for any offense defeats a § 1983 false arrest claim even if different from the stated reason. The panel used this to focus the inquiry on whether any arrest offense was supported.
Betts v. Shearman, 751 F.3d 78, 82 (2d Cir. 2014): Defines probable cause and explains that information from an eyewitness/victim generally suffices unless circumstances raise doubts about veracity. The panel treated the complainant’s identification as presumptively reliable absent strong reasons to discount it.
Curley v. Village of Suffern, 268 F.3d 65, 70 (2d Cir. 2001): Even some unreliability (e.g., intoxicated witnesses) does not necessarily vitiate probable cause where countervailing indicia of reliability exist. The panel used Curley to reject Banyan’s nighttime/distance/obstruction arguments, emphasizing corroboration via a specific matching description.
Dancy v. McGinley, 843 F.3d 93, 109 (2d Cir. 2016): Warns that vague descriptions plus mere proximity are insufficient for suspicion. The panel distinguished Dancy by emphasizing the complainant’s specific description (three men, one with a red vest carrying a jacket) and the quick temporal proximity.
Phillips v. Corbin, 132 F.3d 867, 869 (2d Cir. 1998): A grand jury’s refusal to indict does not, as a matter of law, prove a lack of probable cause to arrest. The panel used Phillips to reject Banyan’s argument that non-indictment on robbery-related counts undermined probable cause.

3) Malicious prosecution; indictment presumption and dissipation of probable cause

Manganiello v. City of New York, 612 F.3d 149, 161 (2d Cir. 2010): Recites New York malicious-prosecution elements (initiation, favorable termination, lack of probable cause, malice). The panel used Manganiello as the governing framework.
Bermudez v. City of New York, 790 F.3d 368, 377 (2d Cir. 2015) and Colon v. City of New York, 60 N.Y.2d 78, 82 (1983): Indictment creates a presumption of probable cause rebuttable only by fraud, perjury, suppression of evidence, or other bad-faith police conduct. The panel applied this to the indicted counts (assault of officers and resisting arrest) and held Banyan failed to show misconduct sufficient to rebut the presumption.
Lowth v. Town of Cheektowaga, 82 F.3d 563, 571 & n.2 (2d Cir. 1996) (citing Callan v. State, 73 N.Y.2d 731 (1988)): Probable cause may dissipate after arrest if intervening facts make the charge’s groundlessness apparent. The panel held that the complainant leaving the scene with the jacket did not constitute an intervening fact that made the charges “groundless.”

4) Evidentiary rulings (Rules 403, 404, 609) and limiting instructions

Boyce v. Soundview Tech. Grp., Inc., 464 F.3d 376, 385 (2d Cir. 2006): Evidentiary rulings reviewed for abuse of discretion and reversible only if they affect substantial rights. The panel applied this deferential standard to both challenged admissions.
Daniels v. Loizzo, 986 F. Supp. 245, 250 (S.D.N.Y. 1997) (citing United States v. Hayes, 553 F.2d 824, 828 (2d Cir. 1977)): Provides Rule 609/Rule 403 balancing considerations (impeachment value, remoteness, similarity, and importance of credibility). The panel endorsed the district court’s reliance on credibility as central given competing narratives and unclear video.
Crenshaw v. Herbert, 409 F. App'x 428, 432 (2d Cir. 2011) (summary order): Supports admitting prior convictions where veracity is central and the factfinder must choose between contradictory versions of events. The panel used this as an analogous approval of admitting impeachment evidence with limiting instructions.
United States v. Carboni, 204 F.3d 39, 44 (2d Cir. 2000): Second Circuit’s inclusionary approach to Rule 404(b)—other-acts evidence is admissible for any non-propensity purpose if relevant and Rule 403 satisfied. The panel used Carboni to uphold admission of the precinct video to show post-incident “condition,” not propensity.
United States v. Gomez, 617 F.3d 88, 96 (2d Cir. 2010): Presumption that juries follow limiting instructions unless overwhelming probability they cannot and the evidence is devastating. The panel relied on this to conclude limiting instructions adequately managed prejudice from the precinct video.

Legal Reasoning

Abandonment doctrine as a procedural gatekeeper. The court treated failure to respond to specific summary-judgment arguments as abandonment, not a merits determination about baton/taser reasonableness. This underscores that, in counseled civil-rights litigation, opposition briefing must engage each defendant’s discrete factual/legal arguments.
Probable cause anchored in contemporaneous identification + corroborating description. The panel emphasized the complainant’s near-immediate identification of Banyan and the close match to the detailed description. Even if the identification conditions were imperfect (night, distance, obstructions), corroboration supplied “countervailing indicia of reliability” sufficient for probable cause under Betts and Curley.
Separating later charging outcomes from the arrest-probable-cause inquiry. The court declined to convert later grand jury decisions into retroactive proof that probable cause never existed, invoking Phillips v. Corbin. The false-arrest analysis remains focused on what officers reasonably knew at the time of arrest.
Malicious prosecution: indictment presumption and “dissipation” limits. For indicted counts, the Colon/Bermudez presumption controlled; Banyan’s dispute about how Sikorski characterized video evidence did not rise to fraud/perjury/suppression/bad faith. For unindicted counts, the panel held probable cause existed and did not dissipate: the complainant’s departure did not make the case “groundless” under Lowth.
Evidence law: credibility and “condition” as legitimate non-propensity uses. The firearm conviction came in for impeachment (Rule 609) after Rule 403 balancing, with the court stressing that credibility was pivotal because videos were blurry. The precinct video came in not to show Banyan’s character, but to show his condition after the incident (relevant to injury/impact of force), with limiting instructions to constrain misuse.

Impact

This decision is a nonprecedential summary order, so it does not formally create binding circuit law. Still, it is practically instructive in four ways:

Briefing discipline matters: silence in the face of specific summary-judgment arguments can be treated as abandonment, especially for counseled parties.
Eyewitness identification remains potent for probable cause when promptly made and corroborated by a specific description, even if environmental factors arguably reduce reliability.
Grand jury “no bill” or partial non-indictment is not a shortcut to defeating probable cause for false arrest, and indictments substantially harden the defense posture on malicious prosecution via the presumption.
Trial courts retain broad discretion to admit impeachment convictions and post-incident videos when credibility and injury assessment are central, particularly when paired with limiting instructions.

Complex Concepts Simplified

Summary judgment: A pretrial ruling where the judge decides there is no genuine dispute of material fact requiring a trial on certain claims.
Abandonment (waiver) at summary judgment: If a party does not respond to an argument for dismissal of a claim, the court may treat that claim as given up.
Probable cause: Reasonable grounds to believe a person committed a crime, based on reasonably trustworthy information—less than proof beyond a reasonable doubt.
Malicious prosecution (New York): A civil claim asserting someone wrongfully initiated/continued a criminal case without probable cause and with malice, ending in the plaintiff’s favor.
Indictment presumption of probable cause: If a grand jury indicts, the law presumes there was probable cause to prosecute; the plaintiff must show serious police misconduct (e.g., perjury, fraud, suppression) to overcome it.
Rule 609 (impeachment by prior conviction): Allows certain prior convictions to be used to challenge a witness’s credibility, subject to balancing unfair prejudice against probative value.
Rule 404(b) propensity bar; non-propensity purposes: You generally cannot introduce “other acts” to argue “he’s the type of person who does this,” but you can use such evidence for other relevant reasons (e.g., showing condition, intent, knowledge), if not unfairly prejudicial.
Limiting instruction: A direction from the judge telling jurors the limited purpose for which they may consider certain evidence.

Conclusion

Banyan v. Sikorski reinforces several recurring Second Circuit themes in civil-rights litigation: claims can be lost through nonresponsive summary-judgment briefing; probable cause can rest on prompt eyewitness identification corroborated by a specific matching description; grand jury outcomes do not mechanically negate probable cause for false arrest; and New York malicious prosecution claims face a formidable indictment-based presumption of probable cause absent proof of police bad faith. On evidentiary issues, the order reflects the circuit’s deference to trial courts’ Rule 403/404/609 balancing—especially where credibility and injury assessment are central and limiting instructions are given.