Our Team

Charles D. Maurer, Jr.

Founder & Owner

Charles D. Maurer, Jr.

U.S. Immigration Attorney | Business Litigation and Complex Legal Matters

With more than 40 years of legal practice, Charles D. Maurer, Jr. is one of the founding attorneys of NYIS Law Firm and has extensive experience in U.S. immigration law, business litigation, and complex legal matters.

In 1978, Mr. Maurer founded Maurer Law Firm in San Francisco, which was later renamed NYIS Law Firm in 2015. Today, the firm operates offices in San Francisco, San Diego, Orange County, La Jolla, and New York, serving clients across the United States and internationally.

As a highly accomplished trial attorney, Mr. Maurer has successfully secured multiple million-dollar verdicts in complex cases. During his time practicing in La Jolla, he represented plaintiffs in securities and commercial fraud litigation, achieving one of the largest legal verdicts in the United States.

Earlier in his career, Mr. Maurer served as Director and Legal Counsel at Risk Analysis and Research Corporation in San Francisco, where he gained extensive experience in business risk management and corporate compliance. This background enables him to approach business immigration and investor visa cases from a strategic perspective.

He has also assisted high-net-worth international clients with major real estate transactions in La Jolla, demonstrating his expertise in complex legal and financial matters. His litigation experience allows him to develop risk-aware immigration strategies, particularly for cases involving complex background reviews, business structures, and high-net-worth individuals.

Bar Admissions

Charles D. Maurer, Jr. is licensed to practice law in:

• California
• Arizona
• Washington
• New York
• United States Supreme Court

His multi-state licensure allows him to handle complex legal matters involving federal immigration law and multi-state business operations, particularly for multinational companies and international clients.

As of 2021, Mr. Maurer has received the Martindale-Hubbell “AV Preeminent” Rating for 41 consecutive years, the highest rating for legal ability and professional ethics.

In 2015, he was also recognized with the Best Attorneys in America Lifetime Achievement Award, further confirming his distinguished reputation in the legal profession.

Vera C. Su

Managing Attorney

Vera C. Su

New York Immigration Attorney | Corporate and Individual Visa Strategy

Vera C. Su is the Managing Attorney at NYIS Law Firm and has more than 10 years of experience practicing U.S. immigration law, focusing on employment-based immigration, corporate immigration services, and complex visa applications.

As a licensed New York attorney and member of the American Immigration Lawyers Association (AILA), Ms. Su regularly advises international students, technology professionals, employers, and immigrant families on U.S. visa strategies and long-term immigration planning.

She has extensive experience assisting clients with complex status transitions and employer-sponsored immigration cases.

Practice Areas: U.S. Visas and Employment-Based Immigration

Ms. Su handles both individual and employer-sponsored immigration cases, including:

• H-1B Work Visas and Extensions
• L-1 Intracompany Transfer Visas
• E-2 Treaty Investor Visas
• P-1 Extraordinary Ability Visas
• PERM Labor Certification
• EB-1 Extraordinary Ability Immigration
• EB-2 / EB-3 Employment-Based Green Cards
• I-485 Adjustment of Status
• TN Visas for Professionals under USMCA
• Corporate Immigration Compliance and Risk Management

She has extensive experience in PERM labor certification and employment-based immigration cases, helping clients develop long-term strategies to transition from temporary visas to permanent residence (green cards).

Corporate Immigration and Business Clients

In addition to individual cases, Ms. Su advises companies on:

• Structuring lawful employment sponsorship
• Designing visa strategies for international talent
• Immigration compliance and regulatory issues
• Responding to Requests for Evidence (RFE)

She also assists businesses involved in international trade and investment expansion, providing immigration solutions for complex corporate cases.

Because of her long-term work with Chinese international students and immigrant communities, Ms. Su has deep experience with:

• OPT to H-1B status transitions
• Immigration planning for international graduates
• Entrepreneur and startup visa strategies
• Family immigration planning

Her approach focuses on long-term immigration strategy rather than a single visa application.

Professional Membership

• New York State Bar
• Member, American Immigration Lawyers Association (AILA)

Through her involvement with AILA, Ms. Su closely monitors U.S. immigration policy updates and enforcement trends to ensure clients receive the most current legal guidance.

David Lin

Senior Attorney

David Lin

U.S. Immigration Attorney (New York & Washington DC) | Corporate and Investment Immigration

David Lin is a Senior Attorney at NYIS Law Firm and is licensed to practice law in New York and Washington, D.C. He focuses on U.S. immigration law, corporate visa strategy, and investment-based immigration.

Mr. Lin has extensive experience handling complex immigration petitions, employer-sponsored cases, and immigration risk analysis, and often integrates litigation-based thinking into immigration strategy development.

Practice Areas

His experience includes:

• H-1B Work Visas and Extensions
• L-1 Intracompany Executive and Manager Visas
• EB-1C Multinational Manager Immigration
• EB-2 / EB-3 Employment-Based Green Cards
• EB-5 Investor Immigration
• K-1 Fiancé Visas
• Family-Based Immigration
• Naturalization and U.S. Citizenship Applications

Mr. Lin’s work spans nonimmigrant visas, employment-based immigration, investor visas, and family immigration, allowing him to design multi-path immigration strategies for clients.

Corporate Immigration Services

For corporate clients, Mr. Lin assists with:

• Structuring EB-1C multinational executive immigration cases
• Planning L-1 to green card strategies
• Employer-sponsored immigration petitions
• RFE responses and compliance risk analysis

His knowledge of both corporate law and immigration law makes him particularly effective in cross-border corporate and investment structures.

Litigation and EEOC Background

Mr. Lin previously handled immigration, civil litigation, and EEOC matters, giving him valuable insight into risk management and documentation strategy in immigration cases.

He also worked with judges at the 30th Judicial Circuit Court in Lansing, Michigan, assisting with case review, legal research, and report drafting, which strengthened his understanding of legal procedures and evidentiary standards.

Bar Admissions

• New York State
• Washington, D.C.
  
  

Dorothea Lockhart

Senior Attorney

Dorothea Lockhart

U.S. Immigration Attorney | Multinational Executive and Extraordinary Ability Visas

Dorothea Lockhart is a Senior Attorney at NYIS Law Firm, focusing on nonimmigrant and employment-based immigration visas for companies and individuals seeking to obtain, transfer, or retain highly skilled international talent.

She has extensive experience representing multinational executives, researchers, artists, professors, scientists, and professionals across multiple industries.

Ms. Lockhart also advises companies on immigration compliance, including, I-9 compliance, public access file (PAF) compliance and immigration considerations during corporate mergers and acquisitions.

Practice Areas

Her immigration practice includes:

• EB-1A Extraordinary Ability Green Cards
• EB-1B Outstanding Professors and Researchers
• EB-1C Multinational Executives and Managers
• EB-2 National Interest Waiver (NIW)
• L-1A / L-1B Intracompany Transfer Visas
• O-1 Extraordinary Ability Visas
• TN Professional Visas
• H-1B Specialty Occupation Visas

She develops long-term immigration strategies to ensure smooth transitions from temporary visas to permanent residency.

Education

• Juris Doctor (J.D.), New York Law School
• Bachelor’s Degree, St. Augustine College

Bar Admission

• New York State
  

Yuki Yu

Senior Attorney

Yuki Yu

U.S. Immigration Attorney | Work Visas and Corporate Immigration Strategy

Yuki Yu is a Senior Immigration Attorney at NYIS Law Firm and holds a Master of Laws (LL.M.) from Fordham University School of Law.

She previously interned at the New York Supreme Court, assisting judges with case review, legal research, and report drafting.

Practice Areas

Ms. Yu has extensive experience handling:

• H-1B Work Visas
• TN and E-3 Professional Visas
• EB-2 / EB-3 Employment-Based Immigration
• Other nonimmigrant visa categories

She provides immigration planning for multinational companies, startups, and professionals, particularly in the areas of corporate immigration compliance and the impact of mergers and acquisitions on employee immigration status.

Bar Admission

• New York State
• Member, American Immigration Lawyers Association (AILA)

Corporate Services

Ms. Yu assists companies with:

• Global talent visa strategy
• Immigration risk analysis during mergers and acquisitions
• Work visa and employment authorization planning

Her experience helps companies successfully secure U.S. visas and work authorization for international employees while maintaining regulatory compliance.

Dacongcong (Amanda) Ma

Attorney

Dacongcong Ma

U.S. Immigration Attorney | Extraordinary Ability and Employment-Based Immigration

Dacongcong (Amanda) Ma is an attorney at NYIS Law Firm and a member of the American Immigration Lawyers Association (AILA). Her practice focuses on employment-based immigration and extraordinary ability visas, particularly EB-1A, NIW, and O-1 visas.

Ms. Ma holds a Master’s Degree in International Law from Fudan University Law School and an LL.M. from Fordham University School of Law.

During her early career, she interned at Fangda Partners (Shanghai) and General Electric China, gaining experience in corporate law, commercial transactions, and legal practice. While studying at Fordham, she also served as a research assistant to Professor Mark Cohen.

Practice Areas

Her practice includes:

• EB-1A Extraordinary Ability Green Cards
• EB-2 National Interest Waiver (NIW)
• O-1 Extraordinary Ability Visas
• EB-3 / H-1B / L-1 Corporate Immigration Visas
  
  

She provides comprehensive immigration strategies covering temporary visas, employment-based immigration, and long-term green card planning.

Corporate and Talent Immigration

Ms. Ma assists companies and professionals with:

• High-skilled talent recruitment strategies
• Multinational executive and professional visas
• Immigration compliance and risk management
• Investment immigration and NIW case planning

Her cross-border experience allows her to advise clients in banking, real estate, and commercial transactions on immigration-related legal issues.

Bar Admissions

• Passed China National Judicial Examination (2010)
• New York State Bar (2015)
• Member, American Immigration Lawyers Association (AILA)