On October 28, 2025, Lowey was appointed Interim Co-Lead Class Counsel for purchasers of Containerboard Products in Artuso Pastry Foods Corp. v. Packaging Corporation of America, et al. 1:25-cv-08856 (N.D. Ill.)

Plaintiff alleges that the largest producers of containerboard, linerboard and containerboard products (including cardboard boxes), colluded to raise prices more than 30% through multiple parallel price increases between 2020 and the present.