Joseph F. Haag


Vice Chair, Intellectual Property Department

Haag, Joseph F.

Joseph Haag, a vice chair of the firm's Intellectual Property Department, is an experienced intellectual property lawyer who focuses his practice on patent litigation, patent prosecution and client counseling for patent matters. Since joining WilmerHale in 2001, Mr. Haag has successfully represented a variety of technology clients, including in technical areas such as electronic circuitry and devices, semiconductor fabrication and packaging, cellular telephone and wireless devices, and software. Over the course of his career, he has advised on many aspects of intellectual property and has represented clients in patent litigation in federal courts and before the International Trade Commission.

Mr. Haag has extensive patent prosecution experience for mechanical, electromechanical and software inventions. He also has extensive experience in due diligence investigations for corporate transactions.

With respect to patent litigation, Mr. Haag has extensive experience in all aspects of IP litigation. Mr. Haag's recent patent litigations have involved technologies such as IT service management, electrochromic glass, cellular telephone and wireless devices, electronic devices and circuitry, non-volatile computer memory, lithography systems, and semiconductor fabrication and packaging.

Honors & Awards

  • Selected as a 2013-2017 IP Star by Managing IP, a guidebook that identifies leading IP lawyers in the United States 
  • Recommended in the 2016 and 2017 editions of The Legal 500 United States for intellectual property: trade secrets and intellectual property: patent litigation: full coverage
  • Recognized in the 2010-2017 editions of Northern California Super Lawyers for his intellectual property litigation practice
  • Named a "Massachusetts Super Lawyers' Rising Star" in intellectual property law in the May 2005, 2006 and 2007 issues of Boston Magazine

Publications & News


August 16, 2017

Inside WilmerHale’s Approach to Matter Management for IP

Outside counsel use matter management tools for a plethora of reasons—from creating budgets, to managing the progress of matters, to measuring staffing levels—all in an effort to provide predictably and transparency to clients. This article discusses the firm's approach to matter management for patent prosecution and for post-grant proceedings.

June 9, 2017

The Legal 500 United States 2017 Recognizes 125 WilmerHale Lawyers Across 28 Practice Areas

The Legal 500 United States has released its 2017 rankings, recommending 125 WilmerHale lawyers—including 12 who are named to its elite “Leading Lawyers” list and two on its “Next Generation Lawyers” list—and 28 practice areas in its 11th edition.

June 8, 2017

WilmerHale Partners and Practices Named Among Managing Intellectual Property's 2017 IP Stars

IP Stars identifies lawyers based on their practice and industry experience, and recommendations from their peers and clients.

June 22, 2016

The Legal 500 United States 2016 Recognizes 111 WilmerHale Lawyers Across 30 Practice Areas

The guide's rankings are based on a series of criteria, including client feedback, interviews with private practice lawyers, and its own research.

May 17, 2016

WilmerHale Attorneys and Practices Recognized in 2016 edition of IP Stars Handbook

The fourth edition of the IP Stars Handbook—a Managing IP guide that identifies the leading IP firms and lawyers in the world—has been released and it prominently ranks WilmerHale and 19 of its partners.

July 6, 2015

Managing IP Recognizes WilmerHale, Attorneys in 2015 IP Stars Handbook

Managing Intellectual Property has released the third annual edition of its IP Stars Handbook—a guide that identifies the leading IP firms and lawyers in the United States—prominently ranking WilmerHale and 18 of its partners.

July 16, 2013

Palo Alto Attorneys Featured in 2013 Northern California Super Lawyers

Twenty-two WilmerHale attorneys ranked in the tenth annual Northern California Super Lawyers listing for 2013.

June 19, 2013

New Patent Review Process Shows Emerging Trends

An article by Joseph Haag and Ali Abugheida, appearing in the Daily Journal.

May 31, 2013

Thirteen WilmerHale Partners Named as 2013-14 IP Stars by Managing IP

Managing IP magazine, a Euromoney Legal Media Group publication, has released its inaugural edition of IP Stars—a guidebook that identifies the leading IP firms and lawyers in the United States. WilmerHale is among the top nationally ranked firms in the guide and is rated highly in multiple states.

December 18, 2012

Intellectual Property Law in 2012

With another successful year in 2012, we are stepping back to consider some of the highlights in intellectual property law and our IP practice. The continued implementation of the America Invents Act has led to new thinking about patent strategy and the use of various post-grant proceedings. The courts and practitioners have continued to wrestle with the scope of patentable subject matter, direct and indirect infringement, inequitable conduct, damages, and other issues. At the same time, the intersection of IP and other areas of law continues to expand, such as with the scrutiny concerning the adequacy of disclosures of patent rights during standards-setting. Our IP practice has been active in these and other areas.


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JD, magna cum laude, University of Minnesota, 1997, Minnesota Law Review, Order of the Coif

BS, Mechanical Engineering, Northwestern University, 1994

Bar Admissions



United States Patent and Trademark Office

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