This excerpt taken from the IPHS DEF 14A filed Apr 28, 2008.
When must stockholder proposals be submitted for the 2009 Annual Meeting?
Stockholder proposals submitted for inclusion in our 2009 proxy statement must be received in writing by our Corporate Secretary no later than 5:00 p.m. Eastern Time on January 1, 2009. Stockholder proposals that are not intended to be included in the 2009 proxy statement must be received not less than 60 nor more than 90 days in advance of our 2009 Annual Meeting, unless we announce the meeting date less than 70 days before the meeting. In that case, proposals must be received not later than 10 days after we announce the meeting date. In each case, proposals must be accompanied by information required by our by-laws. This information includes, among other things, a description of the matter and name and address of the stockholder seeking to present the proposal.