Lesley A. Wallerstein, LLC is a leading intellectual property law firm based in Northbrook, Illinois, dedicated to providing exceptional legal services to clients who value innovation and protection of their intellectual property. As a renowned patent attorney and former patent examiner, Lesley A. Wallerstein has acquired unparalleled expertise in patent and trademark law, helping individuals and businesses protect their unique ideas and innovations.
Our Services
We provide a comprehensive range of legal services, catering to the intellectual property needs of our clients. Our expertise includes:
- Expert patent and trademark searches and opinion letters to help clients make informed decisions about their intellectual property.
- Patent, trademark, and copyright applications, renewals, and office actions to guide clients through the complex patent and trademark registration process.
- Custom licensing agreements and nondisclosure agreements (NDAs) to facilitate collaborations and protect confidential information.
- Intellectual property mediation services to resolve disputes and conflicts related to patents, trademarks, and copyrights.
- Contract review services to ensure compliance with intellectual property laws and regulations.
- Cease and desist letters to settle disputes and protect client intellectual property rights.
What Sets Us Apart
Lesley A. Wallerstein's unique blend of technical and legal expertise, combined with her vast industry knowledge and experience as a former patent examiner, sets her apart from other intellectual property attorneys. Her ability to understand the technology and innovation behind a client's intellectual property makes her an invaluable asset in the prosecution and enforcement of patents, trademarks, and copyrights.
Leadership and Expertise
As an Illinois Super Lawyer for 6 years, Lesley A. Wallerstein has received recognition from the legal community for her exceptional expertise in intellectual property law. Her extensive experience, combined with her technical background, enables her to provide unparalleled guidance and representation to clients in the fields of:
- Biomechanical engineering
- Pharmaceuticals
- Alternative energy technologies
- Cutting-edge textiles
- Sporting goods
Expert Support Team
Our team of expert patent search professionals and illustrators works closely with Lesley A. Wallerstein to provide comprehensive intellectual property services. Together, we strive to protect and preserve the innovative spirit of our clients while ensuring their intellectual property is safeguarded and utilized to its fullest potential.
Contact Us
For any intellectual property-related matters or concerns, please do not hesitate to contact us. Lesley A. Wallerstein is committed to providing exceptional legal services and personalized attention to each client. Let us help you protect your intellectual property and take your innovation to the next level.
Overall Experience
The reviewers had a highly positive experience working with Lesley Wallerstein, an intellectual property attorney. They praised her expertise, professionalism, and exceptional communication skills.
Expertise and Knowledge
Lesley demonstrated in-depth knowledge of trademark and patent law, helping clients navigate complex issues and find resolutions. She grasped the intricacies of their cases, provided valuable insights, and educated them on the process.
Communication and Service
Clients appreciated Lesley's prompt and clear communication, keeping them informed throughout the process. She was responsive to their questions and concerns, making them feel comfortable and confident in her ability to handle their cases.
Trust and Recommendation
Reviewers highly recommend Lesley's services, citing her integrity, professionalism, and exceptional work. Many expressed their intent to continue working with her in the future, which is the highest form of recommendation.

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