There’s been a lot of speculation of what Navboost is but to my knowledge nobody has pinpointed an adequate patent that could be the original Navboost patent. An interesting quality of this patent is that it doesn’t explicitly mention clicks and I suspect that people looking for the Navboost patent may have ignored this patent because it doesn’t mention clicks. Navboost Assigns Relative Scores To DocumentsGoogle executive Eric Lehman described in the trial that Navboost assigned scores to documents. How The Patent Uses Popularity ScoresThe patent describes multiple ways that it uses popularity scores. The more this patent is analyzed, the more it looks like what the trial documents described as Navboost.