Dennis J. Butler

Dennis J. Butler

Practice Areas
Education
  • Temple University Law, Juris Doctor, 2003
  • Pennsylvania State University, MS EMCH, 1995
  • Pennsylvania State University, BS MET, 1993
  • Pennsylvania State University, AS MET, 1991
Bar Admissions
  • Delaware Bar
  • Pennsylvania Bar
  • United States District Court for the District of Delaware
  • U.S. District Court for the Eastern, Central and Western Districts of Pennsylvania
  • Supreme Court of Delaware
  • U.S. Court of Appeals for the Federal Circuit

Dennis J. Butler Partner

Philadelphia: 215.965.1282   Wilmington: 302.394.6006   F: 215.965.1331   E: dbutler@panitchlaw.com

Dennis J. Butler is a Delaware and Pennsylvania attorney who helps innovators protect their inventions and companies protect their intellectual property. Dennis’ practice focuses on intellectual property and technology law, including representing clients in the U.S. District Court for the District of Delaware and additional U.S. district courts, as well as before the U.S. Patent and Trademark Office and foreign patent offices. 

Dennis has extensive experience in preparation, filing and prosecution of patent applications and inter partes reviews before the U.S. Patent Trial and Appeal Board. Dennis has extensive experience conducting in-person and remote interviews with U.S. patent examiners to expedite allowance of U.S. patents. His practice is concentrated in mechanical technologies, including medical devices, polymer  systems and materials, small appliances, automotive mechanisms, cleantech  technologies, structural composite assemblies, bicycle technology, indoor games  and electro/mechanical  devices.  

Prior to joining Panitch Schwarze Belisario & Nadel LLP, Dennis was patent counsel  at a Synthes, Inc., where he managed the patent portfolio, assisted with patent  litigation, formulated business arrangements and analyzed mergers and acquisitions for the spinal implant division. He was previously an associate and patent agent at Akin Gump Strauss Hauer & Feld LLP and an engineer with Boeing Defense and Space Group, Helicopters Division and United Technologies – Pratt & Whitney.

His practice also focuses on patent litigation on behalf of both plaintiffs and defendants. He has worked on cases involving a wide variety of technologies, including medical devices, cellular telephones, electronic monitoring systems, and banking processes.

Dennis received his J.D. from Temple University’s Beasley School of Law while working full-time at Boeing Defense and Space Group and Akin Gump Strauss Hauer & Feld LLP.  He received his B.S in Mechanical Engineering Technology and M.S. in Engineering Mechanics from the Pennsylvania State University.

Dennis is a member of the Delaware Bar, the Pennsylvania Bar, Penn State Alumni Association, and the Delaware County Chamber of Commerce. He is registered to practice before the U.S. Patent and Trademark Office and is admitted to practice before the U.S. District Court for the District of Delaware, Eastern, Central and Western Districts of Pennsylvania and Supreme Court of Delaware.

Memberships

  • Irish American Business Network and Chamber of Commerce
  • FastStart Mentor Program, Mentor
  • Penn State Alumni Association
  • Delaware County Chamber of Commerce

Representative Matters

  • ImmerVision, Inc. v. LG Electronics Inc., Delaware, representing plaintiff ImmerVision, Inc., patent infringement
  • Inter Partes Reexaminations of U.S. Patent No. 6,844,990, PTAB, representing patent owner ImmerVision, Inc.
  • Zig Zag Innovations, LLC v. Leviton Manufacturing Co., Inc., Delaware, represented defendant Leviton Manufacturing Co., Inc., patent infringement
  • Martinson Industries, LLC v. Phalanx Defense Systems, Inc., Florida, represented defendant Phalanx Defense Systems, Inc., patent infringement, unfair competition, false marking, breach of competition, tortious interference
  • Skyline Toolworks LLC v. Techna Clip, LLC, Pennsylvania, represented defendant Techna Clip, LLC, patent infringement
  • Herrick Tackle LLC v. Outdoor Performance Gear, LLC d/b/a Tundra Tackle Co., Minnesota, represented plaintiff Herrick Tackle LLC, patent infringement
  • Life Alert Emergency Response, Inc. v. Excelsis Investments, Inc. d/b/a Stealth Technologies, Inc., Delaware, represented plaintiff Life Alert Emergency Response, Inc., patent infringement
  • Maxell, Ltd. v. BLU Products, Inc., Delaware, represented defendant BLU Products, Inc., patent infringement
  • Brentwood Industries, Inc. v. Stinger Equipment, Inc., Kentucky, represented plaintiff Brentwood Industries, Inc., patent infringement
  • AMI Entertainment Network, LLC v. E La Carte, Inc., Delaware, represented plaintiff AMI Entertainment Network, LLC, patent infringement
  • Alex is the Best, LLC v. BLU Products, Inc., Delaware, represented defendant BLU Products, Inc., patent infringement
  • Regalo International, LLC v. Munchkin, Inc., Delaware, represented plaintiff Regalo International, LLC, patent infringement
  • JSDQ Mesh Technologies LLC v. Leviton Manufacturing Company, Inc., Delaware, represented defendant Levison Manufacturing Company, Inc., patent infringement
  • Inter Partes reexamination of U.S. Patent No. 7,945,498, PTAB, represented third- party requester Elemica, Inc.
  • LaserMax, Inc. v. Sellmark Corporation, Delaware, represented plaintiff LaserMax, Inc., patent infringement
  • Candella, LLC v. Primitives by Kathy, Inc., Minnesota, represented defendant Primitives by Kathy, Inc., patent infringement
  • Tuition Fund, LLC v. Cartera Commerce, Inc., Tennessee, represented defendants Cartera Commerce, Inc. and on Vesdia Corp., patent infringement
  • Inter Partes Reexamination of U.S. Patent No. 8,230,816, PTAB, represented third- party requester Carlson Pet Products, Inc.
  • Advertising Specialty Institute, Inc. v. Landmark Corporate Marketing Services Ltd., E.D. Pa., represented defendant, Landmark Corporate Marketing Services Ltd., misappropriation of trade secrets and breach of contract
  • DMI Sports, Inc. v. Regents Sports Corp., E.D. Pennsylvania., represented plaintiff, DMI Sports, Inc., patent infringement

Articles & Presentations

Nine Panitch Schwarze Attorneys Named Among 2021 PA Super Lawyers // June 7, 2021
Philadelphia IP lawyers listed among Pennsylvania’s elite attorneys by Thomson Reuters. Read more

Panitch Schwarze Patent Litigation Team Wins PTAB Proceeding for Client ImmerVision // May 14, 2021
In this inter partes review, the petitioner challenged a patent owned by Panitch Schwarze client ImmerVision.  Read more

Panitch Schwarze Partner Speaks at The Pennsylvania State University – Harrisburg Commencement Ceremony // May 10, 2021
Delaware and Pennsylvania IP attorney delivers commencement speech at the Pennsylvania State University – Harrisburg graduation ceremony for the School of Science, Engineering, and Technology. Read more

Panitch Schwarze Attorney Dennis J. Butler Featured in Irish Legal 100 2020 // December 21, 2020
Founded in 2008 by the Irish Voice newspaper in New York, the Irish Legal 100 is an annual list of the most distinguished U.S. legal professionals who share an Irish background.  Read more

Patent Litigation 101: A General Overview of Patent Litigation for Non-Litigators // December 17, 2020
This course will explain the milestones in a basic patent litigation from both a plaintiff’s and defendant’s position including claims and defenses, budget, and co-pending inter partes/post-grant review. Read more

Basics - Patent Virtual Marking // August 31, 2020
Virtual patent marking facilitates marking a patented article or related packaging with a single URL, such as http://www.companyZ.com/patents.htm, as opposed to marking constantly changing product offerings with ever changing patent numbers. Read more

Panitch Schwarze Attorney Dennis J. Butler Named Among Irish Legal 100 // August 19, 2020
Delaware and Pennsylvania IP attorney listed among top legal professionals of Irish heritage Read more

Panitch Schwarze Client Tekcapital Files for a Patent for Potential Treatment of Coronavirus Patients // February 13, 2020
Panitch Schwarze Client Tekcapital Files for a Patent for Potential Treatment of Coronavirus Patients Read more

Attorney Dennis Butler to Speak at 2019 Venture & IP Conference // August 15, 2019
Panitch Schwarze partner Dennis Butler will present at the 2019 Invent Penn State Venture & IP Conference. His session will focus on IP 101 – "What Every Start-up Needs to Know about IP Protection." This discussion will emphasize intellectual property issues that start-ups may face, as well as some of the best strategies on how to manage those risks. Read more

Tekcapital Portfolio Company Belluscura Files for Another Patent for its Portable Oxygen Concentrator // February 19, 2019
Tekcapital Portfolio Company Belluscura Files for Another Patent for its Portable Oxygen Concentrator Read more

Panitch Schwarze Partner Dennis J. Butler Speaks at Penn State's Capstone Design Conference // May 10, 2018
Panitch Schwarze Belisario & Nadel LLP is pleased to announce that firm partner and Delaware intellectual property attorney Dennis J. Butler was selected to address students, faculty and guests at the 2018 Capstone Design Conference presented by Penn State Harrisburg’s School of Science, Engineering, and Technology. Read more

Panitch Schwarze Partners Participate in Annual Joint Patent Practice Seminar // May 7, 2018
Panitch Schwarze partners John Simmons and Dennis Butler participated in the 34th Annual Joint Patent Practice Seminar on May 2 in New York City. The JPPCLE is an annual one-day seminar that features knowledgeable speakers such as judges, government officials, and attorneys discussing the latest trends and important topics in intellectual property law. Read more

PIPLA Year in Review Meeting // April 30, 2018
Panitch Schwarze partner John Simmons, who also serves as president of the Philadelphia Intellectual Property Association (PIPLA), is proud to announce that the organization’s annual year-in-review meeting will be held May 10, 2018. Read more

Penn State Honors IP Attorney Dennis J. Butler with Alumni Achievement Award // October 24, 2017
Panitch Schwarze partner honored by Penn State Harrisburg’s School of Science, Engineering, and Technology for success, leadership, and contribution to society Read more

Panitch Schwarze to Remain as Litigation Counsel for Patent Owner // November 17, 2016
Dennis J. Butler continues to represent children’s furniture company in patent infringement case in federal court in District of Delaware Read more

PTAB Grants Rehearing of Patent in Delaware Litigation // February 4, 2016
In a rare move, the U.S. Patent Trial and Appeal Board recently granted rehearing of its denial to institute inter partes review of Greatbatch Ltd.’s U.S. Patent No. 7,327,553.  Read more

Dennis J. Butler Named Partner at Panitch Schwarze Belisario & Nadel // January 19, 2016
Dennis J. Butler brings deep experience with patent prosecution and litigation, including the increasingly important area of post-grant review. Read more

PTAB Rules in favor of BBiTV against Hawaiian Telcom // April 1, 2015
Panitch Schwarze Belisario & Nadel LLP is pleased to announce that today the United States Patent and Trademark Office’s Patent Trial and Appeal Board (PTAB) ruled in favor of its client Broadband iTV, Inc. (“BBiTV”).  Read more

Panitch Schwarze Successful in Defeating Inter Partes Review Attempt by Unified Patents Inc. // January 8, 2015
Panitch Schwarze Belisario & Nadel LLP is pleased to announce that on behalf of its client, Broad Band iTV (BBiTV), it has been successful in defeating an attempt by Unified Patents, Inc. to initiate an Inter Partes Review before the Patent Trial and Appeal Board against BBiTV’s patent.  Read more

Post-Grant Review // May 29, 2014
Dennis J. Butler, of Panitch Schwarze Belisario & Nadel LLP, will give a presentation on Post-Grant Review. Lunch will be served. CLE will be applied for but is not guaranteed. Read more

8 Panitch Schwarze Intellectual Property Attorneys Named Pennsylvania 'Super Lawyers' and 'Rising Stars' for 2013 // May 17, 2013
Pennsylvania "Super Lawyers" 2013 lists four attorneys from Panitch Schwarze Belisario and Nadel LLP as top lawyers in the state along with five attorneys as Pennsylvania "Rising Stars." Read more

Dennis Butler Elected to Executive Committee of Brehon Law Society // June 29, 2012
Dennis Butler, Attorney at Panitch Schwarze Belisario and Nadel LLP, was elected to the Executive Committee of the Brehon Law Society, a legal organization comprised of attorneys, judges and law students of Irish descent. Read more

Panitch Schwarze IP Attorney Dennis Butler to Speak at Capstone Engineering Conference // April 3, 2012
Dennis Butler, Attorney at Panitch Schwarze Belisario and Nadel LLP, will be the featured speaker at the upcoming Engineering Capstone Design Conference held at the Pennsylvania State University on April 21, 2012. The conference will take place at the University's Harrisburg campus. Read more

6 IP Attorneys with Panitch Schwarze Named Pennsylvania 'Super Lawyers' and 'Rising Stars' for 2012 // March 23, 2012
Panitch Schwarze Belisario and Nadel LLP is pleased to announce that Ronald L. Panitch, William W. Schwarze, Martin G. Belisario and Alan S. Nadel have been selected to the Pennsylvania Super Lawyers list 4 of the top attorneys in Pennsylvania for 2012. No more than 5 percent of the lawyers in the state are selected by Super Lawyers. Read more

Panitch Schwarze Hosts Leahy-Smith America Invents Act Live Seminar & Webinar // December 16, 2011
Panitch Schwarze attorneys Alan Nadel, Clark Jablon, John Simmons, and Dennis Butler hosted a live seminar and webcast entitled “Leahy-Smith America Invents Act” on November 30, 2011. The presentation discussed major changes found in the sweeping new law including the introduction of the first-tofile system, the post grant review proceedings, and the impact this will have on patent litigation. Read more

Leahy-Smith America Invents Act - Live Seminar & Webinar // November 30, 2011
Panitch Schwarze attorneys Alan Nadel, Clark Jablon, John Simmons, and Dennis Butler hosted a live seminar and webcast entitled "Leahy-Smith America Invents Act" on November 30, 2011. Read more

Honors & Awards

  • Named a  Pennsylvania "Rising Star," 2012 - 2013, by Thomson Reuters, publishers of Pennsylvania Super Lawyers
  • Named Among Irish Legal 100

 

 

Dennis J. Butler
Rated by Super Lawyers


loading ...


 

Blog

September 15, 2020
Copyrights: Protect Yourself and Respect Others
Copyright is a dangerous legal minefield for organizations, particularly with so many copyrighted works readily available for employees to unthinkingly cut, paste and use improperly for company marketing purposes. Read more

March 25, 2020
IP Considerations During the Coronavirus Pandemic
As the world continues to grapple with the ongoing pandemic of the novel coronavirus and the disease it causes, COVID-19, intellectual property attorneys and their clients face new challenges daily. Read more

Email Disclaimer

Sending an email to our office does not create an attorney-client relationship, and none will be formed unless there is an expressed agreement between the firm and the client. Thus, we strongly advise against sending confidential or privileged information to us until you can establish such a relationship. Furthermore, we advise against sending privileged or confidential information through email at all, since we can in no way ensure the security of your email. In fact, neither this website nor the email system involved is encrypted, so you should not assume that your email is confidential. We cannot guarantee that someone else will not see it.

Do you agree to this Email Disclaimer?

I Agree I Do Not Agree