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We offer more than 100 years of accumulated experience as  counsel to our clients.

​About Us

Arch & Lake LLP maintains one of the premier intellectual property practices. We provide top-notch counsel and service on matters of protecting, managing and enforcing intellectual property assets as well as counseling our clients to avoid infringing intellectual property rights of others.  We help clients in diverse businesses to manage their intellectual property needs.

Arch & Lake’s IP Team has experience in virtually all technical disciplines, including mechanical engineering, electrical engineering, civil engineering, chemistry, computers, database systems, cyber-law, and others. Together, we offer more than 100 years of accumulated experience as intellectual property counsel to our clients.

About us

Practice Areas

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Practice Areas


Our team has expertise in various technologies, including electrical engineering, mechanical engineering, biomedical engineering, civil engineering, chemistry, computers, database systems, and others. Together, we offer more than a century of accumulated experience as intellectual property counsel to our clients.

​We provide significant experience in various technical areas including



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Hao Tan

Hao Tan is an Intellectual Property attorney with more than 10 years of experience in patent prosecution and litigation. He represents clients in front of the PTAB, district court, and Federal Circuit.

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Shen Wang

Shen Wang is an Intellectual Property attorney with extensive experiences in patent prosecution, patent litigation, client counseling and technology development and analysis.  

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Haoyi Chen

Haoyi Chen focuses his practices on helping companies to solve their intellectual property issues from each of their business needs, including patent/trademark application and protection strategies, IP rights disputes and litigation, and trade secret protections.

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Alex Liang provides legal services for domestic and foreign companies concerning China and U.S. patent litigation, U.S. import/export compliance, anti-sanctions, technology control compliance, U.S. trade secret litigation, and technology transfer & cooperation.


Peter Curtin is an experienced litigator and trial lawyer who has appeared in federal trial courts across the country in civil and criminal cases for more than twenty five years.


CJ is an experienced IP counselor and litigator having litigated patent, copyright, and trade secret cases in federal courts across the country.


Di Yu is a counsel who provides legal and business consultancy services including: Patent procurement, Trademark applications, export control analysis, merger and acquisition review, business contract review, Tax advices, and business development advices.


Jiyeon Yang is an accomplished commercial attorney with 20+ years’ success in enterprise and consumer technology.  She has extensive experience as a technology transactions and supply chain in-house counsel, including SaaS, enterprise software, professional services, marketing, privacy, and international operations

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Ellen is an associate who specializes her practice in IP law, including patent prosecution, and IPR and PGR proceedings. 


Mario is an associate who is specialized in IP litigation and procurement. 

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Alyssa is an associate attorney at Arch & Lake LLP. Her practice includes patent prosecution and litigation.  

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Brad Han is a Patent Attorney with expertise in Electrical engineering & Computer science. His practice includes patent prosecution and patent litigation.

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Teresa is an associate at Arch & Lake who is experienced in preparing and prosecuting patents in the areas of computer software, medical devices, mechanical devices, and telecommunications technologies.

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Shaopeng is a scientific advisor whose technical expertise includes computer software and quantum programming. 


Yu is a technology specialist with more than 10 years of patent prosecution and IP management experience in both private practice and in-house and is qualified to practice in the UK, Singapore, and China.

Contact us


203 N LaSalle Street

Suite 2100

Chicago, IL, 60601

Tel. 312-558-1369

2500 Wilcrest

Suite 301

Houston, TX, 77042

Tel. 346-335-9890

Email us

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Visit us

Monday - Friday 8:30-17:00




Our team provides insights, news, and information about patents, trademarks, and other intellectual property practice in the United States and worldwide.

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