IDCC has never split. There were quite a few calling for it to split when it briefly ran up to $82 on hype. Some even wanted it to split 10 for 1 but that would mean it would be trading for less than $1.50 share today!
Never have I seen a company offer a shareholder so little return over a 25 year period (and still stay in business)! I guess if they went out of business then insiders couldn't harvest those lucrative and excessive options!