David K. Ludwig
{ Bio Portrait }

David Ludwig’s practice focuses on patent litigation relating to electronics, pharmaceuticals, medical devices, and scientific instruments. He has significant trial and appellate experience, and has represented clients in several USPTO inter partes review proceedings and interference proceedings. David’s practice also includes food and drug law, with a particular emphasis on Section 505 of the Federal Food, Drug and Cosmetic Act.

A selection of David's representative matters include:

  • Representing global electronics manufacturer in suit relating to television displays.
  • Defending multiple pharmaceutical companies in patent infringement suits.
  • Representing generic drug maker in antitrust sham litigation suit.
  • Represented a spinal implant manufacturer in a suit against a non-practicing entity, including by filing multiple inter partes review petitions.
  • Represented a scientific instruments manufacturer in a patent infringement suit relating to elemental mass spectrometry.
  • Represented a scientific instruments manufacturer in multiple interference proceedings relating to high pressure liquid chromatography.
  • Successfully challenged the FDA's interpretation of Section 505 of the Federal Food, Drug and Cosmetic Act on appeal to the United States Court of Appeals for the Fourth Circuit.
  • Advised clients on patent issues relating to optical systems such as high-power lasers.

David is also committed to pro bono service:

  • Lead counsel in Second Circuit appeal relating to defamation and First Amendment issues.
  • Represented client in discrimination case, ultimately settling on highly favorable terms.
  • Represented former prisoner in action pertaining to injuries sustained during a transportation accident.


  • CT Law Tribune - New Leader in the Law (2019)


  • JD – University of Virginia School of Law (2013)
  • MBA – Union Graduate College (2010) Beta Gamma Sigma Business Honor Society
  • BS, Physics and Philosophy, magna cum laude – Union College (2009) Harold A. Larrabee Prize for Excellence in Philosophy


  • Connecticut
  • US District Court District of Connecticut
  • US Court of Appeals for the Federal Circuit
  • US Court of Appeals for the Second Circuit
  • US Patent and Trademark Office

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