Intellectual Property Counsel Across Borders
Stepin Law P.C. advises individuals and businesses on protecting trademarks, patents, and copyrights. Securing your IP is essential to maintaining control over your innovations and brand.
We support clients in the United States and internationally, helping them navigate U.S. filings, enforcement, and cross-border matters. With practical, business-focused guidance, we help you protect what you create and grow with confidence.
How we help
- Clarity first. We identify what matters now vs. later, so you don't over-file or under-protect.Useful for founders who need quick prioritization.
- Cross-border aware. Strategy and documentation choices that work for U.S. + China context.Evidence, timelines, and practical enforcement considerations.
- Execution-ready. Clean deliverables, checklists, and next-step options—no vague advice.So you can act immediately.
Our Attorneys
U.S.-licensed attorneys focused on practical, cross-border intellectual property strategy, filings, and dispute support.

Delong Li
Attorney at Law (China)
Chinese Patent Attorney
Focus on patent litigation, invalidation, prosecution, due diligence, and freedom-to-operate (FTO) analysis. Technical background in telecommunications, audio/video systems, semiconductors, and computing technologies.
Representative matters involve clients such as TCL, Amazon, Intel, OPPO, HPE, Hitachi, Samsung, Tencent, and Kuaishou.

Irene Chen
USPTO Registered Patent Attorney
Chinese Patent Attorney
Focus on patent drafting and prosecution, reexamination and invalidation, patent administrative litigation and infringement matters, as well as trademark filing, prosecution, and dispute resolution.
Insights
Practical articles on trademarks, patents, copyright, and cross-border IP strategy.
Cross-border Brand Risk: Where Problems Start
Common trademark and brand risks businesses face when expanding across jurisdictions, and how early planning can prevent later disputes.
U.S. Trademark Filing Checklist
A practical checklist of the information and decisions businesses should prepare before starting a U.S. trademark filing.
Utility Patent vs. Design Patent: How to Choose
A practical guide to deciding whether utility patent or design patent protection makes more sense for a product, feature, or commercial launch.