CHICAGO - Viewed in the context of the ongoing relationship between an attorney insured and his client, a letter failed to establish that the insured knew that the client had a legal malpractice claim against him before the effective date of his professional liability insurance policy, an Illinois panel held Aug. 7, further finding that the insurer had a good faith basis for disputing coverage (ISBA Mutual Insurance Co. v. Arthur S. Gold, et al., No. 1-12-2401 & 1-12-2963 $(Cons.$), Ill. App., 1st Dist., 3rd. Div.; 2013 Ill. App. Unpub. LEXIS 1711).