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Lesley A. Wallerstein, LLC

Patent, Trademark & Copyright Law

Respected by her peers, trusted by her clients. Lesley A. Wallerstein, Esq. is the smart attorney and smart choice.

A graduate of MIT and a former patent examiner,  Lesley knows how to write patent and trademark applications and get them done right.

Clients trust Lesley to have their back. She takes the time to understand your invention and business goals. Her advice draws from years of technical and legal experience. If you hire Lesley, she will keep you in the loop and guide you where you want to be.

In 2019, in 2020, and again in 2021, Lesley’s peers and Super Lawyers selected her as an Illinois Super Lawyer – a distinction reserved for only the top 5% of lawyers in the state.

If your product or service is worth protecting, it is worth having a top lawyer on your side. Call or write Lesley today to see how she can help you.

Contact Lesley A. Wallerstein, Esq.

Please reach out to me so I can personally answer any questions you have.

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Latest News

Congratulations All Around; Client Site Visit

Congratulations All Around; Client Site Visit

The law office continues to stay busy creating and defending our clients’ valuable intellectual property. There are lots of congratulations to go around this month. Hats off to Will for his second patent, and Matthew for his second trademark. We persuaded one of the...

Lesley A Wallerstein, LLC Celebrates 10th Anniversary

Lesley A Wallerstein, LLC Celebrates 10th Anniversary

This summer, the law firm celebrated its 10th anniversary. Here is a look back at our accomplishments to date. We have successfully prosecuted over 40 patents, and almost 200 trademarks. Please join me in congratulating Brett on his 4th patent, and Steve for his 6th...

Law Firm Earns Women’s Business Enterprise Certification

Law Firm Earns Women’s Business Enterprise Certification

Lesley A. Wallerstein, LLC, proudly announces the law firm has earned Women’s Business Enterprise (WBE) certification from the Women's Business Enterprise National Council. I thank my parents for believing in my ability to do math and science. When I arrived at MIT...

Professional Affiliations

wallerstein professional affiliations