533901 IT expert witness who lives in Houston or 200 miles radius

We offer online continuing education courses. a competitor has stolen a minimum of 64 of our courses and placed it on their website and has been selling it for the past 5 years. Although the course material is public domain and is a pdf file, but it has our URL, from our website on it with the unique name that we gave it...!!! Recently when our attorney contacted them, they realized their mistake and started cleaning up and changing the course names. However we have the screen shuts that were taken by snagit as a proof before they changed the URL. We also have some of those courses with our URL on their CD...!! I am looking for an expert witness who specializes on website designs and has a good knowledge of pdf files and their protection perhaps. Someone who can take a look at their old pdf file version of the course and tell if it was copied from our website, since it has our unique given name on it before they cleaned up the page. Of course will go through the details with the right candidate. Thank you very much. Franco Davati