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Kenneth S Weitzman

Patent application Attorney at Roseland, NJ

5.0   9 reviews
  • State Years
    Dist. of Columbia - DC 30 years
    New York - NY 31 years
    New Jersey - NJ 31 years
  • Licensed for 30 years
    State DC
    Acquired 1993
    Good Standing No misconduct found
  • Licensed for 31 years
    State NY
    Acquired 1993
    Currently Registered No misconduct found
  • Licensed for 31 years
    State NJ
    Acquired 1992
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Kenneth

Learn Kenneth’s areas of practice.

Practice areas

Ken Weitzman is the managing partner and founding member of WEITZMAN LAW OFFICES, LLC, which specializes in intellectual property ("IP") law. Mr. Weitzman, who is a registered patent attorney, has the highest Martindale-Hubbell peer review rating of "AV® Preeminent™" and is recognized as a leading IP attorney. Mr. Weitzman is recognized by Inside Jersey as one of "New Jersey's Top Legal Minds," has been named a "New York Super Lawyer" and "New Jersey Super Lawyer" by Law & Politics, and his Firm is recognized by ALM as one of the "Go-To Law Firms® at the Top 500 Companies" and was selected the winner of the 2014 Corporate Int'l Magazine Global Award for "Trademarks Law Firm of the Year in New York."

Mr. Weitzman is a veteran IP attorney with over 25 years experience in virtually all areas of IP law, including patent and trademark litigation; patent, trademark and copyright procurement and prosecution; opinions and client counseling; product clearances; IP due diligence investigations; and IP agreements and licensing. In addition, Mr. Weitzman has also served as a mediator and expert witness in litigations involving patent issues. 

Prior to founding his firm, Mr. Weitzman was a partner with the New York law firms of Chadbourne & Parke and Morgan & Finnegan.

Specialties: Specializing in intellectual property (IP) law, including patents, trademarks, copyrights and related IP matters. 

Practice Areas include:
* IP Litigation
* Patent Portfolio Management
* Patent Prosecution
* IP Opinions and Counseling
* Product Clearance Investigations
* Patentability & Prior Art Studies
* Trademark Prosecution
* Trademark Clearance Investigations
* Domain Name Disputes
* Due Diligence Investigations
* IP Licensing & Transactions
* Copyright


AV Preeminent Peer Review Rating


425 Eagle Rock Avenue, Suite 401
Roseland, NJ, 07068


5.0 / 5.0
  9 customer reviews
5 Star
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1 Star
Posted by Dan | September 15, 2010
In over 15 years of multimedia marketing, I have worked with some of the finest IP attorneys in the United States. Even at the most disciplined, many of these seasoned attorneys do not completely understand the relationship one must have with a brand to properly work in complete harmony– reaching far beyond a logo trademark or red flagging a potential legal issue. Ken Weitzman is the epitome of a fine-tuned, in-brand- sync IP attorney. Ken appreciates all aspects of brand protection and is forward thinking in his approach to suggest, implement, and perhaps most importantly, maintain a brand from every possible IP perspective. He does this with a level of sophistication and intelligence others profit by. I am one of those individuals. Take the time to speak with Ken. Within one call or personal meeting, you will start to see the fundamental credits of which I speak. You will want Ken Weitzman in your legal corner and by your IP side to sustain and advance your company.
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Posted by Susan | September 16, 2010
Great attorney for IP!
I have worked with Ken in the last three years. I was in the process of filing for my first patent in the US, and Ken was referred to me by a good friend for his knowledge in IP. Since it was my first time filing a patent application, the entire process was confusing and overwhelming. Ken was patient with me in explaining everything and guiding me through the process so that I made the best decisions for myself. In addition, he made clear what to expect in the future so that I could prepare as much as possible. Since this is a venture that I have started on my own, the individual costs are extensive, and Ken has made it as smooth as possible. I am currently completing the filing process internationally, so Ken has been great in helping me progress things along. Ken is always very prompt in replying to calls and emails, which I greatly appreciated. I still have a long way to go with my patent, but Ken will get me through. I highly recommend him.
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Posted by Daniel | July 31, 2020
This review is from a person who hired this attorney.
| Hired Attorney
An absolute BLESSING!
Ken and his team have been a blessing to work with. Having been around the block a few times with various attorneys, Ken & his crew have made things happen that was "not possible" with other firms. As an independent inventor, Weitzman Law Offices has demonstrated a breadth and depth of expertise unsurpassed by any law firms I have dealt with in 10+ years. And the same assessment goes for their professionalism, flexibility and courtesy. As long as Ken and his team are around, there will never be another IP firm for me.
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Posted by Taran Swan | October 28, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Ken has represented my medical device start-up in all of our IP matters for over five years. He has enabled us to protect our technology and brands by obtaining patents and trademarks in the U.S. and internationally on behalf of my company. Ken has also provided invaluable legal advice in connection with IP issues involving third parties. Ken is very client focused, always listening to hear our needs. He is very patient and knows how to break-down complicated legal matters in simple language. He is also willing to challenge me which I value in a lawyer.
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Posted by David | October 21, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Knowledgable, Professional, Adaptable and Reasonable
Kent and his team represented us in preparing and filing our initial IP for a new start-up. They were quick to understand our technology and provided insightful advice and alternatives to protect our ideas. They also helped educate and guide us through the entire process while offering different options and strategies. They worked within our budget and were flexible with our unique needs. I would not hesitate recommending them.
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Posted by Salil | October 19, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommend Weitzman Law Offices, LLC
I was referred to Ken by a friend of a close friend. Hiring Ken to handle my patent application and trademark requests for my startup was a great decision. I had no experience in both areas, and Ken has patiently and carefully walked me through the process at each phase this past year to help me achieve my goals. For example, Ken gave candid and thorough feedback during the patentability search process, and clearly outlined the rationale behind his recommendation for next steps. The patent application itself has many options associated with it like provisional/non-provisional, and domestic/international; Ken has provided great guidance on these decision points and many others to ensure my approach and patent application content aligns with my startup strategy goals and budget. I am looking forward to seeing how my application fares, but am confident of its quality and detail - thanks to Ken.
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Posted by Karen | October 13, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Ken has been attentive and effective
I have very much appreciated working with Ken on an ongoing legal issue. He is detailed and concise and follows up with me to ensure I stay on target.
Posted by jen | September 16, 2010
Review of Ken's performance
Ken is very knowledge to medical terms and thus an exceptional attorney to handle patent application for medical device, especially inthe cardiovascular area. I used a few attorneys. They claims on their medical knowledge, but it did not show up in the writing of the patent application. I have to do much more work than necessary. On the other hand, Ken not only help you organize much better your medical reasons to support your patent but also can add some sustantial argument to further enhance your case. He knows how to focus and works closely with me to get things done..
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Posted by Keith | September 15, 2010
Weitzman Law Offices, LLC
Ken and his Associates have provided outstanding Intellectual Property Development and Managementservices for my business. I have known Ken for nearly 20 years. I find him to be of the highest integrity and extremely knowledgeable about a wide range of IP issues and tactics. His firm has been highly responsive to my needs as a client. They provide straightforward guidance and feedback while exercising appropriate tact and diplomacy if required. Turn around has been expedient. I hope to be able to contiiue a long and valued relationship with Weitzman Law Offices as my business develops and grows.Kei
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Contact for Details


AVVO RATING 9.4 (Superb)

Work Experience

  • Managing Attorney
  • 2007 - Present
  • Partner
  • Chadbourne & Parke LLP
  • 2005 - 2007
  • Partner
  • Morgan & Finnegan LLP
  • 1994 - 2005
  • Associate
  • Carella Byrne Bain Gilfillan Cecchi & Stewart
  • 1992 - 1994
  • Design Engineer
  • Texas Instruments
  • 1985 - 1989
View all work experience


  • Seton Hall University School of Law
  • JD - Juris Doctor
  • 1992
  • University of Massachusetts, Amherst
  • BS - Bachelor of Science
  • 1985


  • Intellectual Property Owners Association
  • 2005 - Present
  • American Intellectual Property Law Association
  • 2005 - Present
  • New York Intellectual Property Law Association
  • 1994 - Present
  • New Jersey Intellectual Property Law Association
  • 1992 - Present
  • New Jersey State Bar Association
  • 1992 - Present
View all associations

Languages Spoken

  • English

Honors and Awards

  • New Jersey Super Lawyer
  • Law & Politics Magazine
  • 2015
  • Bristol Who’s Who of Executives and Professionals.
  • Bristol Who’s Who
  • 2015
  • Global Award for "Trademarks Law Firm of the Year in New York"
  • Corporate Int'l Magazine
  • 2014
  • New Jersey Super Lawyer
  • Law & Politics
  • 2014
  • New Jersey Super Lawyer
  • Law & Politics
  • 2013
  • one of the "Go-To Law Firms® at the Top 500 Companies"
  • ALM
  • 2013
  • New Jersey's Top Legal Minds
  • Inside New Jersey
  • 2012
  • one of the "Go-To Law Firms® at the Top 500 Companies"
  • ALM
  • 2012
  • AV Preeminant Peer Review Rating
  • Martindale-Hubbell
  • 2012
  • one of the "Go-To Law Firms® at the Top 500 Companies"
  • ALM
  • 2011
  • New York Super Lawyer
  • Law & Politics
  • 2007
  • AV Peer Review Rating
  • Martindale-Hubbell
  • 2005
  • Patent Attorney
  • US Patent & Trademark Office
  • 1991
View all awards


  • BNA
  • Author, Chapter 10, "Summary Judgment Motions," Anatomy of a Patent Case, pp. 103-120 (BNA 2d ed. 2012)
  • 2012
  • BNA publications
  • Anatomy of a Patent Case - Chapter on Summary Judgment
  • 2009
  • The National Law Journal
  • After 'Knorr-Bremse,' Counsel Opinion Still Needed
  • 2005
  • Medical Design News
  • How to Avoid Patent Infringement Litigation
  • 2004
  • Intellectual Property & Technology Law Journal
  • A Patentee's Dilemma: Providing Actual Notice of Infringement Without Becoming Subject to a Declaratory Judgment Action
  • 2003
View all publications

Speaking Engagements

  • AIPLA IP Practice in Japan Committee
  • Recent Changes to Reexamination Proceedings
  • 2006

Attorney endorsements

Received (4)
Given (3)
Endorse Kenneth
Intellectual property Attorney | Oct 14
Relationship: Fellow lawyer in community
"I have known Kenneth through a mutual friend and colleague and as a fellow lawyer in the community. Attorney Weitzman has consistently provided thoughtful and insightful advice in responding to complex patent and IP law questions. I endorse Kenneth Weitzman and would recommend his services and expertise."
Intellectual property Attorney | Oct 14
Relationship: Worked for lawyer
"Ken is a fantastic attorney, proficient in all aspects of IP practice."
Patent application Attorney | Oct 13
Relationship: Worked for lawyer
"I endorse this lawyer. Ken is a client-oriented professional who drafts a solid application. His years of experience in litigation influences his drafting as he considers not just how the application will move to issuance but how well it will litigate. He was and is a great mentor."
Intellectual property Attorney | Sep 21
Relationship: Fellow lawyer in community
"Ken is a well-respected, highly knowledgeable IP attorney who is meticulous but efficient so that clients get real bang for their buck"
Intellectual property
Intellectual property
Intellectual property