Bien Fait, Translation and Patent Services

Done Well … Done Right


Bruce D. Popp, PhD

Independent Translator 🙢 Patent Translation Specialist 🙢 Expert Witness on Translation

USPTO Registered Patent Agent

ATA Logo American Translator Association
Certified Translator for French into English

Award-winning translator of Henri Poincaré.
cover of my first book, The Three-Body Problem and the Equations of Dynamics

And author in physics history. ORCID 0000-0001-9788-6466
cover of my second book, Henri Poincaré: Electrons to Special Relativity Early application of kinetic theory of gases to star clusters, Journal for the History of Astronomy 53, no. 2 (May 2022): 141–62. A Flame War about Entropy, American Journal of Physics 93 (6). Contemporary Reaction to Gibbs's Statistical Mechanics, arXiv preprint 2412.11425v1 Poincaré on Gibbs and on Probability in Statistical Mechanics, arXiv preprint 2505.12168v1

I perform premium quality, human translations where accuracy is essential; you can count on me (not AI, machine translation or a large language model) standing behind the translation you are relying on. Documents I translate include patents and patent applications for filing and for evidence, and related documents involving: prosecution, opposition and litigation (prior art, filings, pleadings, notices, office actions, opinions of the search authority, briefs, court and administrative decisions, and expert witness reports).
And I also provide preliminary amendments for filing with the USPTO to accompany my translations of patent applications.

I am available as an expert witness on translation from French into English of patents and evidence.

I provide relevant statements and declarations, including statements of accuracy required by Title 37 CFR 1.52(d)(1).

I research, write and publish in physics history focused on the work of Henri Poincaré. Please see my pages on this research. If you are interested in a translation of a historical scientific document in French, especially in math or physics, from the 19th or early 20th centuries please contact me.


Winner of the 2017 S. Edmund Berger Prize for Excellence in Scientific and Technical Translation

Bruce D. Popp with Berger Prize Certificate and book: The Three-Body Problem and the Equations of Dynamics
Bruce D. Popp with Berger Prize Certificate