Duke University School of Law
JD, 2001

Articles Editor, Journal of Law & Contemporary Problems

University of Wisconsin
MS, 1996, Organic Chemistry

Bucknell University
BS, 1994, Chemistry, magna cum laude, Phi Beta Kappa



District of Columbia

US Patent & Trademark Office

Daniel A. Klein

Staff Attorney

t 617-248-4917   f 617-502-4917

Daniel Klein is a Staff Attorney in the Intellectual Property Department. He is primarily involved in training, knowledge management and procedures related to US and international patent practice. Prior to assuming this role, Mr. Klein practiced for approximately 15 years as a patent attorney in both law firm and in-house settings.

His experience as outside counsel includes creating and managing global patent portfolios for proprietary pharmaceutical companies as well as performing freedom-to-operate and invalidity analyses for generic pharmaceutical companies in the context of ANDA submissions. He also has experience as in-house counsel for two global pharmaceutical companies managing all aspects of intellectual property for drug candidate programs throughout various phases of research and development, as well as counseling R&D and business units on issues relating to IP, including Hatch-Waxman and product lifecycle management, performing due diligence investigations and assisting with licenses and acquisitions.

Publications and Presentations

  • “Patentees Should Now Consider Reissue As Strategic Option,” co-author, IP Law360, April 2013.
  • “Prospectively Curing Inequitable Conduct Through Reissue: Reconsidering a ‘Well-Settled Principle’,” author, Santa Clara Computer & High Technology Law Journal, 2010.
  • "Improved Treatment of Cyclic β-Amino Acids and Successful Prediction of β-Peptide Secondary Structure by a Modified Force Field: AMBER*C," co-author, Journal of Computational Chemistry, 2000.
  • “Synthesis and Structural Characterization of Helix Forming β-Peptides: Trans-2- Aminocyclopentanecarboxylic Acid Oligomers,” co-author, Journal of the American Chemical Society,1999.
  • “Residue-Based Control of Helix Shape in β-Peptide Oligomers,” co-author, Nature, 1997.

Mr. Klein is an inventor on United States Patents 6,060,585 and 6,613,876.

Professional and Community Involvement

Mr. Klein is a member of the Boston Patent Law Association.



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