During the last webmaster video meeting, a Google employee John Mueller reported that the presence of duplicate content on different pages of the site is not a negative factor for ranking.
Google s algorithms can handle some of the duplicate content, Muhler said.
The discussion of the nuances of ranking with duplicate content began with a question from one of the hangout participants who was involved in the sale of auto parts. He wondered if the presence of the same description of parts on different pages of the site could negatively affect Google rankings.
Muhler replied that there was no need to worry about this.
If there are several pages on the Internet with the same information, Google will choose only one of them for ranking – the one that best matches the search query. If pages with duplicate information are on the same site, Google will also not display all pages in the search results, but will select only one of them. However, this ranking factor is not at all an indication that duplicate content is associated with any negative signal.
Repetition of content on site pages is the norm.
To confirm this information, Mueller suggested that you look at the descriptions of goods on the websites of online stores, which often contain the same information, but Google does not regard this as a negative signal.
Duplicate information in the page footer also acts as technically duplicated content, but its presence does not harm the site in any way.
Source: Search Engine Journal