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Your Trusted Business Law Partner in Diamond Bar, CA
At Shiang Law Firm, we specialize in providing tailored legal solutions for businesses navigating complex legal landscapes. Our firm combines decades of experience with a client-centric approach, offering strategic guidance in business immigration, corporate governance, intellectual property protection, and transactional law. With a focus on international clients expanding into the U.S. market, our team brings cultural fluency and legal expertise to help businesses establish and grow operations seamlessly.

We prioritize clear communication, proactive risk management, and personalized service to ensure clients achieve their objectives efficiently. Our attorneys have extensive backgrounds in both U.S. and international law, enabling us to address cross-border legal challenges with precision. From startup formation to asset protection, we partner with clients to deliver practical, results-driven legal counsel that aligns with their long-term goals.
Services
Business Immigration Company Management Intellectual Property Transactions & Agreements Asset Protection
Details
  • Year established: 2025
Highlights and features
  • We offer decades of experience in cross-border legal matters for international businesses.
  • Our attorneys provide tailored solutions for U.S. market entry and expansion.
  • We specialize in business immigration, IP protection, and corporate governance.
  • Our team combines U.S. legal expertise with cultural fluency in Pacific Rim markets.
  • We prioritize clear communication and practical legal strategies aligned with client goals.
What people say
Seamless U.S. expansion Strategic immigration guidance Tailored legal solutions Expertise in IP protection Proactive risk management
Services
Business Immigration
We assist businesses in securing visas for international personnel, including L-1, H-1B, and E-2 visas. Our services cover application strategy, compliance, and long-term immigration planning. Clients benefit from streamlined processes and expert guidance to ensure legal compliance while expanding their U.S. operations.
Company Management
Our firm advises on business entity selection, governance structures, and compliance requirements. We help clients establish LLCs, corporations, and subsidiaries while ensuring adherence to U.S. corporate laws. Services include document preparation, board meeting protocols, and cross-border operational strategies.
Intellectual Property
We help businesses register and enforce trademarks, copyrights, and patents in the U.S. Our services include brand strategy, infringement defense, and licensing agreements. Clients receive proactive IP audits to identify and secure valuable assets against unauthorized use.
Transactions & Agreements
Our team drafts, reviews, and negotiates contracts for business deals, partnerships, and vendor agreements. We focus on clarity, risk mitigation, and enforceability. Services include template customization, breach resolution, and transactional due diligence to protect client interests.
Asset Protection
We implement legal strategies to shield personal and business assets from liabilities. Services include entity structuring, insurance coordination, and debt protection planning. Clients gain peace of mind through customized frameworks that minimize exposure to lawsuits and financial risks.
People
William L. Hsiang
Managing Attorney
Managing Attorney at Shiang Law Firm since 1996, specializing in Chinese law and intellectual property. Former specialist at Graham & James and head of IP at Lee & Li. Holds J.D. from Duke and LL.M. from Harvard.
Dr. Jerome Hsiang
Attorney-at-Law
Attorney with experience in international law and legal scholarship. Published in journals like The Journal of Legal Studies. Holds J.D. from Washington University and LL.M./J.S.D. from UC Berkeley. Admitted in California and D.C.
Questions
What types of business legal services do you offer?
We provide business immigration, formation, governance, IP protection, and contract services. Our focus is ensuring legal compliance and risk mitigation for international clients.
Do I need a business lawyer?
Yes, to navigate complex legal requirements, prevent disputes, and ensure compliance. Our lawyers help with entity selection, contracts, and immigration strategies.
How can I protect my intellectual property?
We assist with U.S. trademark, copyright, and patent registration. Our services include infringement defense and licensing agreements to secure your brand and innovations.
What business entity should I choose?
Options include LLCs, corporations, and partnerships. We evaluate liability, tax, and operational needs to recommend the best structure for your business.
How do your immigration services work?
We guide clients through visa options like L-1, H-1B, and E-2. Our process includes application strategy, compliance checks, and long-term immigration planning.
What if my business faces a lawsuit?
Contact us immediately. We develop defense strategies, handle negotiations, and represent clients in court to resolve disputes efficiently and protect their interests.