David Weiner v. Marcin Chojnacki, et al.

District Court, N.D. Illinois·Decided September 9, 2026·No. 1:23-cv-16573·Unknown

Opinion

THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION DAVID WEINER, ) ) Plaintiff, ) No. 23 C 16573 v. ) ) Chief Judge Virginia M. Kendall MARCIN CHOJNACKI, et al., ) ) Defendants. )

MEMORANDUM OPINION & ORDER

Plaintiff David Weiner brought a complaint alleging violations of the Racketeer Influenced and Corrupt Organizations Act, 18 U.S.C. §§ 1962(c), (d), and various state-law claims. (Dkt. 1). It is one of 151 related cases, all in front of this Court, that Plaintiff’s attorneys have brought alleging that various overlapping Defendants engaged in a fraudulent real-estate investment scheme. This Court has subject matter jurisdiction pursuant to 28 U.S.C. § 1331 and 18 U.S.C. § 1964(c). Over the course of the litigation, numerous defendants settled with Plaintiff. Nonetheless, four separate sets of Defendants filed motions for summary judgment against Weiner: Defendant CK Developers, PLLC (“CK Defendants”) (Dkt. 138); Defendants BMO Property Management, Inc. and David Brandonisio (“Brandonisio Defendants”) (Dkt. 149); Defendants Kendall Murphy, 1st Midwest Financial, Inc. (“Murphy Defendants”) (Dkt. 152); and Defendant Marcin Chojnacki along with related entities (Chojnacki Defendants2) (Dkt. 142). Unlike in many of the other related cases, Weiner’s Complaint does not name Kathleen Long and certain related entities as a

1 There were as many as 16 related cases, but one, Ascot Specialty Insurance Company, A Rhode Island Corporation v. Midwest Title & Closing Services LLC et al, 1:24-cv-05216, settled and closed on December 4, 2025. 2 In this case, the Chojnacki Defendants include Marcin Chojnacki, Robert Rixer, and the following entities: EJ Investment Group, Inc. and Mainstreet Property Management LLC. (Dkt. 142). Defendant (Dkt. 1); thus, references to Long are included only as far as they are relevant to the Motions. It has been well established throughout the related cases that counsel for the Plaintiffs have developed a boilerplate Response brief and 56.1 Statement that they utilized throughout the 15

cases. In Weiner’s case, however, that litigation strategy has hit a particular bump in the road. Weiner was involved in the purchase of eight properties at issue in this case. (Dkt. 158 ¶¶ 14, 18, 23). Only four of those properties, though, were Weiner’s alone. Rapport Builders LLC purchased four of the at-issue properties—Forest Avenue, McCarron Road, West End Avenue, and Highland Avenue. (Dkt. 158 ¶ 18). Weiner founded Rapport alongside Brian McNair; the operating agreement states that the two individuals had the authority to bind the company “acting together or individually with the verbal consent of the other Member.” (Dkt. 158 ¶¶ 15, 17). Before filing his lawsuit, Weiner reached out to McNair, to “tell him what was going on,” but McNair was not interested in talking to him. (Dkt. 158 ¶ 59). They had one conversation over the telephone, but it was brief and did not involve any substance, and have not spoken since. (Dkt. 158 ¶ 59). This

lawsuit is Weiner’s alone. The Chojnacki Defendants, armed with that undisputed information, argue that as a threshold matter, Weiner does not have standing to pursue claims on the four properties that Rapport purchased. (Dkt. 143 at 3-4). Nothing in the record indicates McNair consented to suit, and the Defendants contend that under Illinois law, an LLC can bring a lawsuit only if a majority of its members or managers agree that it should do so. (Id.) Rather than contend with any of the Illinois case law or statutory language put forth by Defendants, though, Plaintiff does not address in any way, shape, or form, this argument, instead continuing to put forth the boilerplate Response brief that counsels have utilized throughout the related cases. (Dkt. 164). Weiner makes no mention of the threshold standing issue.3 Accordingly, the Court deems Weiner’s claims with regard to the four properties that Rapport purchased abandoned, and the Court proceeds on the factual record and analysis only as related to the other four properties. Laborers’ Int’l Union of N. Am. v. Caruso, 197 F.3d 1195, 1197 (7th Cir.1999) (stating that arguments not presented to the district court in

response to summary judgement motions are waived); United States v. 5443 Suffield Terrace, Skokie, Ill., 607 F.3d 504, 510 (7th Cir. 2010) (at the summary judgment stage, it is “not the district court’s job to sift through the record and make (a party’s) case for him”); Barnes v. Nw. Repossession, LLC, 210 F. Supp. 3d 954, 970 (N.D. Ill. 2016) (plaintiff’s failure to respond to defendant's argument that it was entitled to summary judgment on claim meant that plaintiff conceded that summary judgment on that claim was warranted). Further, the only property that Plaintiff actually discusses in the context of his purchasing scheme allegations regarding the CK Defendants is the Forest Avenue Property that is no longer at issue in this litigation, and does so with citation to nothing but Plaintiff’s own testimony for the claim that CK held title to that property at any kind of “discounted price.” (Dkt. 168 ¶ 80). As far

as the back-end contractor side of things, CK Construction only worked on one project with Weiner: his purchase on Thornwood Court. (Dkt. 162 ¶¶ 1–2). Yet the only “back end” or post- closing damages Weiner is claiming is $100,000 for the Rose Street property, which Plaintiff admits that CK had nothing to do with. (Dkt. 158 ¶ 48). Indeed, Weiner makes no attempt to explicate an argument as to why the CK Defendants are involved in this specific case, instead resting only on general allegations about the related cases as a whole. As discussed previously in this opinion (and as will be discussed again), arguments undeveloped at summary judgment are waived. See, e.g., Palmer v. Marion County, 327 F.3d 588, 597-98 (7th Cir. 2003) (stating that

3 Beyond, of course, the RICO statutory standing issue that is a cornerstone of all of the related cases and thus present in the boilerplate response brief. “because Palmer failed to delineate his negligence claim in his district court brief in opposition to summary judgment...his negligence claim is deemed abandoned”); Bonte v. U.S. Bank, N.A., 624 F.3d 461, 466 (7th Cir. 2010) (“Failure to respond to an argument...results in waiver”); Alioto v. Town of Lisbon, 651 F.3d 715, 721 (7th Cir. 2011) (holding that a party “waives an argument by

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David Weiner v. Marcin Chojnacki, et al., (N.D. Ill. 2026).

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