Водяной знак

А справку прочесть не пробовали? Ключевое слово - Watermark.
Буквально под носом лежит - встроенный фильтр.

1. Click Effects Digimarc Embed watermark.
2. Click Personalize.
3. In the Personalize creator ID dialog box, click Register, and follow the instructions on the Digimarc Web site.
4. In the Personalize creator ID dialog box, type your Creator ID in the Creator ID box.
To embed a watermark
1. Click Effects Digimarc Embed watermark.
2. In the Copyright year(s) box, type a year or years.
You cannot type a year before 1922 or after the current year. Separate the years with commas.
3. In the Image attributes area, enable the check boxes for the applicable attributes.
4. Choose an option from the Target output list box.
Monitor and Web require a DPI setting of less than 200, while Printer requires a dpi setting of 300 or higher.
5. Type a value in the Watermark durability box.
Higher values increase the persistence of the watermark.
If you want to confirm the information available to viewers when they detect the watermark, enable the Verify check box.

This feature is not supported by the 64-bit version of CorelDRAW Graphics Suite.