Now if you found any scraped content from other site then it is good news that Google head of web spam team matt cutts developed a format to report to Google about the scraped content that have higher than the original content.
The name of this new tool is Google scraper report. By the three filling area of this tool area as URL on your site where the content was taken from, exact URL on the scraper site & Google search result URL that demonstrates the problem. After putting the all respective areas of this you should check & conformation your site as according webmaster guideline.
Here is one negative point is that it is not compulsory Google will solved your problem. Also in guideline prescribe that you can report your issue to Google, then it is depend upon Google spam team they removed scraped content or not. So with the help of this tool Google can rank the original content above the scraped content.