instituted, unless this would result in deprivation of a vested, constitutionally protected right.” (Emphasis added.) Moshe, 199 Ill. App. 3d at 598.
See Rivard, 122 Ill. 2d at 310. Where a change in the law is "substantive” rather than "procedural,” there is a presumption of prospectivity which is rebuttable only by the act itself. Moshe, 199 Ill. App. 3d at 599. A rule of law, for example, which makes one a party to a suit will be considered substantive so that, in Rivard, the supreme court held that, notwithstanding certain statements by individual sponsors of the legislation, a statute permitting voluntary unincorporated associations to sue and be sued in their own name was a substantive change in the law and would not be applied retroactively, where under the common law previously in effect such an association could not be sued in its own name. Rivard, 122 Ill. 2d at 311. The court determined that the language of the statute and its effective date pointed to a prospective application and would be so applied. 122 Ill. 2d at 312.
A truly retroactive law is defined as " 'one that takes away or impairs vested rights acquired under existing laws, or creates a new obligation, imposes a new duty, or attaches a new disability in respect of transactions or considerations already past.’ ” United States Steel Credit Union v. Knight, 32 Ill. 2d 138, 142 (1965), quoting 82 C.J.S. Statutes § 412 (1953); see First of America Trust Co. v. Armstead, 171 Ill. 2d 282, 290 (1996). In Moshe, the court held that a 1988 amendment to the Voluntary Health Services Plans Act (Ill. Rev. Stat. 1987, ch. 32, par. 595 et seq.), which eliminated the absolute statutory immunity from suit for most health maintenance organizations (HMOs) chartered under the previous version of the act, represented a substantive change in the law, because the amendment operated to make HMOs parties to malpractice suits where formerly they could not have been made parties and it created new obligations and liabilities which did not previously exist. After determining that the change in the law was substantive, the court considered whether the presumption of prospectivity to be accorded the legislation could be overcome either by the express language or by necessary or unavoidable implication. Moshe, 199 Ill. App. 3d at 601-02. The court found no express language directing that the amendments be given retroactive application and no retrospective application was required by necessary implication. Moshe, 199 Ill. App. 3d at 602 (a necessary implication occurs where no other interpretation is permitted by the words of the statute construed).
At this juncture, it clearly appears to us that the new legislative enactment effected a substantive change in the law. It alters the