MADISON, Wis. - Environmental asbestos exposure claims appear to simply be an attempt at avoiding the exclusivity provision of the state's workers' compensation law, while claims involving the licensing of a patent appear entirely frivolous and must be explained, the Seventh Circuit U.S. Court of Appeal held June 6 while affirming judgment for the two companies at the heart of the appeal (Janet Pecher, et al. v. Owens-Illinois Inc., No. 16-1799, Dianne Jacobs, et al. v. Rapid American and Weyerhaeuser Co. and Owens-Illinois Inc., No. 16-2376, Katrina Masephol v. Weyerhaeuser Co., et al., No. 16-2377, Robert Sydow, et al. v. Owens-Illinois Inc., No. 16-2378, Kathy Boyer v. Owens-Illinois Inc., No. 16-2379, Janice Seehafer v. Weyerhaeuser Co., et al., No. 16-2380., 7th Cir.).