Plaintiff's motion to vacate prior orders was properly denied since the claims made by plaintiff in support of vacatur are barred by the doctrines of res judicata and collateral estoppel ( see generally Matter of Reilly v. Reid, 45 NY2d 24). Plaintiff's present motion practice is only the most recent installment in his protracted, highly litigious and uniformly unsuccessful quest to sublet his professional cooperative apartment without board approval ( see Tsabbar v. Auld, 276 AD2d 442; 289 AD2d 115, lv denied 98 NY2d 613; Tsabbar v. Delena, 300 AD2d 196, lv denied 100 NY2d 508; 17 E. 89th St. Tenants v. Tsabbar, 6 AD3d 309, lv denied in part and dismissed in part 3 NY3d 686, cert denied 544 US 979; Tsabbar v. Booth, 293 F Supp 2d 328 [SD NY 2003], affd 115 Fed Appx 513 [2d Cir 2004]). Three years ago, in affirming the dismissal of certain of plaintiff's claims against defendants as barred by the doctrines of res judicata and collateral estoppel, we warned plaintiff that further litigation against these defendants would be sanctionable pursuant to 22 NYCRR 130-1.1 (a) and (c) ( Tsabbar v. Delena, 300 AD2d at 197). Inasmuch as plaintiff, undeterred, has, by bringing the instant motion, continued to press the same patently meritless claims, sanctions for frivolous conduct should now be imposed and defendants reimbursed for the reasonable expenses and attorneys' fees incurred by them in responding to the motion ( see 22 NYCRR 130-1.1; Matter of Sud v. Sud, 227 AD2d 319).
We have considered plaintiff's remaining arguments and find them without merit.