Good point. And I suppose you're right: they don't go to the SEC site to see whether or not the company's delinquent. Most just take the opinion letters they receive at face value.
But in the suspension notice, the SEC says its ticker is ICLR. And ICLR is Icon Plc. It is current with its filings. It's also a Nasdaq company trading at $57.
And the company name given on both documents is ICON Public Limited Company.
By October 2002, they'd started calling themselves just ICON plc, but it's pretty much the same thing, and they seem to have used it interchangeably with ICON public limited company.
As used herein, "ICON plc" and the "Company" refer to ICON public limited company and its consolidated subsidiaries, unless the context requires otherwise.