Two Iconic Firms Announce Merger

Lackenbach Siegel, a venerable trademark firm for over 96 years, is merging with Nolte IP Law Group, a forerunner in the high-tech patent space, to create a full-service midsize intellectual property law firm with a national footprint.

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Partners To Industry

Intellectual Property Attorneys Since 1923.

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Winners for Global Legal Innovation

Nolte Lackenbach Siegel Intellectual Property Law Group offers a comprehensive range of Intellectual Property Legal services.

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Experienced IP Specialists

​Nolte Lackenbach Siegel Intellectual Property Law Group provides strategic legal services that are necessary in obtaining, maintaining, protecting and transferring intellectual property rights in the United States and around the world.

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New Article
Who Owns Your App?
5 Exclusive Rights The “Owner” of Copyright Holds

View The New Article By: Ken Sidelinger,
Managing Partner, IP Commercialization
Article 1 in the IP LifecycleTM Series

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Make Your Mark

The team of dynamic individuals working at Nolte Lackenbach Siegel Intellectual Property Law Group have extraordinary technical and legal expertise acquired over many years working in both industry and private practice.

  • Experts & Specialists

    We can efficiently and effectively learn and understand our client's businesses and provide legal strategies tailored to their specific goals and budgets.

  • Great Case Portfolios

    The Firm belongs to a network of foreign agents and legal counsel that extends to numerous countries around the globe for foreign matters and disputes.

  • Experienced Lawyers and Resources

    Our clients range in size from one person, start-up companies to several of the largest corporations in the world.

  • Satisfying Success Rate

    We invite you to view our attorney profiles, and contact us if we can be of any service to your intellectual property needs.

Areas of Practice

No matter the size of the client, Nolte Lackenbach Siegel Intellectual Property Law Group strives to provide the most value-added, cost-effective services tailored to the needs of each client and each client's matter.


We offer a full range of patent services across all major fields of technology. Through our relationships with patent law firms around the world, we can assist with all of your international patent needs.​


Among the top 10 filers nationwide, our trademark department handles: searching, filing, prosecution and maintenance – both domestically and internationally.​

IP Commercialization

Once our clients create and protect their valuable IP, we help them in all stages along their path of Commercializing that IP for Success!

Advertising & Promotions

From counseling to dispute resolution we help ensure that our clients comply with applicable laws, regulations, and guidelines as well as best practices


​We successfully represent clients in infringement matters both in and out of court. The Litigation department's experience extends to all areas of Intellectual Property.​


From preparation and filing to enforcing registered rights, our Copyright department specializes in avoiding infringement of third parties, licensing, copyright acquisition issues, and more.​​​

Nearly 100 Years Of Experience In Intellectual Property

We are a dedicated intellectual property law firm, offering timely, high quality, and a wide range of cost effective services to all of our clients.

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View Our Professionals

Nolte Lackenbach Siegel Intellectual Property Law Group has experienced attorneys, patent agents, technical consultants, and support staff to provide quality legal services to its clients. Our attorneys and patent agents have extraordinary technical and legal expertise... read more


Robert Golden

Robert Golden

Managing Partner
IP Litigation

Andrew Young

Andrew Young

Managing Partner

Alex Nolte

Alex Nolte

Firm Managing

Renée Duff

Renée Duff

Managing Partner

Ken Sidelinger

Ken Sidelinger

Managing Partner
IP Commercialization


From Our Clients


“I am so glad that we work with your organization to apply for Trademark, Design, & utility Patent. Your team members go above and beyond to ensure that our needs are met and that we are satisfied with the results. I am so appreciative of the professionalism and dedication exhibited by your firm.”

Atul Kothari
Jewelex New York
Siemens Corporation

“We’ve used Nolte for years and have always been impressed with their work, timeliness, and willingness to go the extra mile for us.”

Raymond Bossotti
Vice President Corporate Strategy & Mergers and Acquisitions
Siemens Corporation
COMET Technologies USA

"The Nolte team does a great job with our intellectual property. We feel like their rates are very reasonable, the attorneys are sharp, and they are always very responsive.”

Paul Smith
General Manager
COMET Technologies USA


News, articles, and interviews about patents, trademarks, copyrights, and the internet. Read articles written by our attorneys, see an attorney profiles, or review some of the patents and trademarks we have obtained for our clients.


When Should I File A Patent?

Once you’ve decided to protect your invention with a patent, then the most common question asked is...


​Registering a Trademark - How Do You Do It?

There are two basic types of marks: trademarks and service marks. Trademarks are associated with goods..​.


How to Respond to A Trademark Office Action

While the purpose of an office action is to clearly state the reasons for denial of registration of your mark, there may be multiple issues...


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Contact Us By Phone

+1 866.201.2030

Monday - Friday, 8am to 5pm

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