copying text from a locked pdf file

1. Used PDF Edit tools from http://www.filehunter.com/ to remove the lock
2. This is shareware, adds watermark text which says

THIS IS A DEMONSTRATION
PAGE PRODUCED BY
PDFEditTools
You can order the program at
www.filehunter.com

3. Used pdftohtml - http://pdftohtml.sourceforge.net/ - to convert to html
4. Used find and replace in a text editor like kwrite to remove the watermark text after text conversion.