John F. Witherspoon, a patent lawyer whose career stretched more than five decades, passed away on September 25, 2026, according to IPWatchdog. His work spanned private practice, government service, and law school teaching, making him a familiar figure across different corners of the patent field.
Beyond his professional roles, Witherspoon was remembered as a devoted mentor to countless students and younger lawyers. His death prompted tributes from the patent bar, highlighting the personal impact he had on those who entered the profession under his guidance.
IPWatchdog's obituary is the sole source for this report; no other accounts were available for comparison. The details of his career and the date of his death come directly from that publication.