What percentage of patent holders claim their inventions came as a result of “serendipitous” process?

50%

The percentage of patent holders surveyed in 2005 whose inventions came as a result of “serendipitous” processes—i.e., accidents. The findings are in the book “Inventology,” by Pagan Kennedy. The survey also found that the biggest source of inspiration comes from those who are actually going to be using the finished product, and two-thirds of patents arise from some form of collaboration.