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Tel: 888.666.0969 (Toll Free)

9:30 a.m. to 5:30 p.m. Eastern Time Zone

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Chinese Hotline: 888.666.0969 ext.380

FOR EMPLOYERS & INSTITUTIONS

Hire and Retain
Extraordinary Talent.
With the Right O‑1 Strategy.

Bring top talent onto your team and retain the people already driving your business. With a 15-year history and more than 69,000 petition approvals across our employment-based practice, our firm brings substantial experience to your O‑1 strategy—from eligibility assessment to preparation and filing.

O‑1 ELIGIBILITY · PETITION PREPARATION · FILING
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OUR COMMITMENT TO ELIGIBLE CASES

Approval or Refund®
Approval or Refiling™

Explore our attorney-fee protection programs
NORTH AMERICA IMMIGRATION LAW GROUP
24 hours

Free O‑1 evaluation

Our target turnaround for an initial assessment of your candidate’s O‑1 eligibility.

Within 3 weeks

O‑1 preparation & filing

We prepare and file your O‑1 petition within three weeks of receiving the required documents.

Over 95%

O‑1 approval rate

Our firm’s reported track record in O‑1 cases. Every petition receives an individual assessment.

15 years of experience. More than 69,000 petition approvals. Our practice focuses on NIW, EB‑1A, EB‑1B, and O‑1 petitions for highly skilled professionals and individuals of extraordinary or exceptional ability. The approval total spans EB‑1A, EB‑1B, EB‑2 NIW, and O‑1.

The three-week preparation and filing period begins upon receipt of the required documents; the checklist and case-specific schedule are confirmed at engagement. Filing timing is separate from government processing and the individual’s ability to begin work.

OUR COMMITMENT TO YOUR CASE

Approval or Refund®
Approval or Refiling™

For eligible cases, our commitment includes attorney-fee protection if the petition is not approved.

APPROVAL OR REFUND®

Your attorney fee.
Refunded in full.

If the petition is not approved, the applicable program provides a full refund of our attorney fee.

APPROVAL OR REFILING™

A new filing.
No additional attorney fee.

If the petition is not approved, the applicable program provides refiling at no additional attorney fee.

Available for eligible cases under the applicable engagement agreement. The agreement specifies which program applies and its terms. These commitments concern attorney fees and do not guarantee USCIS approval.

Find out if your case qualifies

EXPERIENCE ACROSS INDUSTRIES

Companies and institutions
we have represented.

1,112Employers & Institutions Served

Companies and institutions served through our O‑1A and EB‑1B practice.

  • Qualcomm logo
    Qualcomm
  • PayPal logo
    PayPal
  • Boston Consulting Group (BCG) logo
    Boston Consulting Group (BCG)
  • Gilead Sciences logo
    Gilead Sciences
  • Thermo Fisher Scientific logo
    Thermo Fisher Scientific
  • Abbott logo
    Abbott
  • SK hynix America logo
    SK hynix America
  • Eaton logo
    Eaton
  • Memorial Sloan Kettering Cancer Center logo
    Memorial Sloan Kettering Cancer Center
  • Dana-Farber Cancer Institute logo
    Dana-Farber Cancer Institute
  • NYU Grossman School of Medicine logo
    NYU Grossman School of Medicine
  • Weill Cornell Medicine logo
    Weill Cornell Medicine
  • Baylor College of Medicine logo
    Baylor College of Medicine
  • University of Minnesota logo
    University of Minnesota
  • Cold Spring Harbor Laboratory logo
    Cold Spring Harbor Laboratory
  • Figure AI logo
    Figure AI
  • Together AI logo
    Together AI
  • Black Forest Labs logo
    Black Forest Labs

LEGAL SERVICES FOR YOUR ORGANIZATION

O‑1 counsel for the
expertise you need.

Whether you are recruiting or planning continued employment for a valued team member, start with their qualifications, current status, and your organization’s timeline.

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COMPANIES & STARTUPS

O‑1 options for new and current employees.

Assess O‑1 eligibility for a new hire or an employee approaching a work-authorization deadline. Review evidence, petitioner arrangements, and the steps relevant to a change of status.

Explore O‑1 services
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UNIVERSITIES & RESEARCH EMPLOYERS

O‑1 petitions for research appointments.

Connect the researcher’s achievements with a new or continuing appointment, supporting evidence, and O‑1 petition requirements.

Discuss an O‑1 research appointment

Planning further ahead? We also advise qualifying research employers on EB‑1B sponsorship.

FOR HR & IN-HOUSE TEAMS

Know what to provide.
Know what happens next.

Our firm prepares the legal petition. Your organization confirms the position and employment terms; the candidate supplies their professional and immigration records.

Review responsibilities and timing

O‑1 APPROVALS & CLIENT EXPERIENCES

Different backgrounds.
O‑1 success, in their own words.

Explore O‑1 approvals supporting roles in industry, universities, and clinical practice, together with each client’s experience of our legal work.

21 O‑1 case stories
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Battery Scientist Engineer
O‑1A
APPROVED

Advanced electrochemical materials

Approved in 17 daysWith premium processing

IN OUR CLIENT’S WORDS

“I truly appreciate everything your team has done throughout the process.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for a battery scientist engineer applying specialized expertise to energy storage and advanced materials.

How we presented the case

We contextualized the client’s publication influence, independent citations, peer-review service, and expert recommendations to demonstrate sustained recognition in advanced electrochemical materials.

Read the case & client review
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Founding Member of Technical Staff
O‑1A
APPROVED

Computational materials discovery

IN OUR CLIENT’S WORDS

“I sincerely thank everyone on your team for their effort and help in putting this petition together!”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval without an RFE for a founding technical role at a U.S. technology company.

How we presented the case

We connected the client’s research impact, computational tools, and peer-review service to the proposed materials-discovery work.

Read the case & client review
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Assistant Professor
O‑1A
APPROVED

Human geography

IN OUR CLIENT’S WORDS

“The team’s attention to detail and review times were stunning.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval supporting a U.S. university appointment in sustainable urban development.

How we presented the case

We showed how independent scholars used the client’s findings in urban planning, environmental governance, and community development.

Read the case & client review
Illustration of Wearable technology & electrical engineering
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Engineer
O‑1A
APPROVED

Wearable technology & electrical engineering

IN OUR CLIENT’S WORDS

“Thank you very much for your support throughout my O‑1 extension process!”
Excerpt from this client’s O‑1 testimonial

An O‑1A extension supporting an engineer’s continued work in medical device technology.

How we presented the case

We documented sustained research recognition and ongoing work in energy harvesting and wireless power transfer for wearable devices.

Read the case & client review
Illustration of Gastroenterology
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Physician-Researcher
O‑1A
APPROVED

Gastroenterology

IN OUR CLIENT’S WORDS

“Thank you for making what could have been a very stressful process much smoother.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval supporting a physician-researcher’s continued work in gastroenterology.

How we presented the case

We contextualized research impact and peer recognition alongside ongoing clinical work. The article lists a fellow role at filing and a subsequent junior faculty position.

Read the case & client review
Illustration of Orthopedic surgery
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Senior Clinical Fellow / Physician
O‑1A
APPROVED

Orthopedic surgery

IN OUR CLIENT’S WORDS

“You have all done truly tremendous work — it is genuinely commendable”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval supporting a proposed U.S. clinical fellowship in orthopedic surgery.

How we presented the case

We documented the influence of the client’s surgical research through independent citations, peer review, and expert explanations.

Read the case & client review
Illustration of Quantum physics & machine learning
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Machine Learning Engineering Role
O‑1A
APPROVED

Quantum physics & machine learning

IN OUR CLIENT’S WORDS

“thanks for all your hard work in taking care of my O1 case!!”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval supporting a proposed machine-learning role with a U.S. employer.

How we presented the case

We connected the client’s quantum-physics research and mathematical modeling expertise to the proposed work on machine-learning systems.

Read the case & client review
Illustration of Electrical & computer engineering
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VP & Chief Optical Engineer
O‑1A
APPROVED

Electrical & computer engineering

IN OUR CLIENT’S WORDS

“A great experience.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for a senior engineering leader following a response to an RFE.

How we presented the case

We addressed questions about the significance of the client’s contributions using contextual evidence of research influence and real-world implementation.

Read the case & client review
Illustration of Clean energy & chemical innovation
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Electrochemical Engineer
O‑1A
APPROVED

Clean energy & chemical innovation

IN OUR CLIENT’S WORDS

“They were consistently responsive and reliable, always providing clear and timely answers whenever I had questions.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for an engineer advancing cleaner chemical production and energy technologies.

How we presented the case

We placed the client’s research influence and professional recognition in context, supported by expert assessments of the contributions.

Read the case & client review
Illustration of Molecular & cellular biology
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Scientist
O‑1A
APPROVED

Molecular & cellular biology

IN OUR CLIENT’S WORDS

“Their clear communication and strategic approach made a complex process feel organized and secure.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval recognizing research in cancer biology, neurodevelopment, and therapeutic discovery.

How we presented the case

We organized the evidence around a coherent research trajectory, independent influence, and recognition by other specialists.

Read the case & client review
Illustration of Mechanical engineering & manufacturing
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Research Assistant Professor
O‑1A
APPROVED

Mechanical engineering & manufacturing

IN OUR CLIENT’S WORDS

“They answered each of my concerns precisely and in a timely manner.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval without an RFE for a research assistant professor working on advanced manufacturing and materials.

How we presented the case

We documented research influence, scholarly publications, peer-review service, expert recommendations, and recognition through research funding.

Read the case & client review
Illustration of Chemical engineering
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Senior Research Scientist
O‑1A
APPROVED

Chemical engineering

IN OUR CLIENT’S WORDS

“The prompt communication and thorough preparation of all materials were instrumental in achieving a smooth application process.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for a senior researcher working on energy storage, thermal flows, and resource efficiency.

How we presented the case

We presented the significance of the client’s technical methods alongside scholarly influence, peer-review service, and expert explanations.

Read the case & client review
Illustration of Robotic autonomy
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Software Engineer
O‑1A
APPROVED

Robotic autonomy

IN OUR CLIENT’S WORDS

“Thank you for your outstanding work throughout the process.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval after an RFE concerning employment terms and the requested period of work.

How we presented the case

We responded with updated company letters clarifying the role, duties, and employer’s commitment to retaining the employee throughout the requested period.

Read the case & client review
Illustration of Materials science & energy storage
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R&D Process Engineer
O‑1A
APPROVED

Materials science & energy storage

IN OUR CLIENT’S WORDS

“Chen Immigration values and upholds integrity while filing the petitions.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for an R&D process engineer advancing energy storage and materials technologies.

How we presented the case

We documented research impact and recognition in materials science, supported by publication evidence, peer review, and independent expert assessments.

Read the case & client review
Illustration of Artificial intelligence
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CEO
O‑1A
APPROVED

Artificial intelligence

IN OUR CLIENT’S WORDS

“Their team made sure that all the documents and evidence were perfectly in order.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for a chief executive working on real-time intelligent systems and digital infrastructure.

How we presented the case

We presented evidence of original technical contributions, independent research use, patent applications, and expert support.

Read the case & client review
Illustration of Organometallic chemistry
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Senior Scientist
O‑1A
APPROVED

Organometallic chemistry

IN OUR CLIENT’S WORDS

“Thank you for the Chen immigration team!”
Excerpt from this client’s O‑1 testimonial

An O‑1A extension supporting a senior scientist’s continued research in chemistry.

How we presented the case

We documented continued recognition through research contributions, publications, citations, peer review, and expert support.

Read the case & client review
Illustration of Medicine & diagnostic research
Default client icon; client photo unavailable
Resident Physician
O‑1A
APPROVED

Medicine & diagnostic research

IN OUR CLIENT’S WORDS

“I had a specific work start date, and the law group ensured I was able to move and start on time”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for a physician whose testimonial describes meeting a specific work start date.

How we presented the case

We presented the client’s research contributions, publication impact, and peer-review record. The client’s account of starting on time reflects this individual experience.

Read the case & client review
Illustration of Bioinformatics
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Chief Scientific Officer
O‑1A
APPROVED

Bioinformatics

IN OUR CLIENT’S WORDS

“Their quality control was meticulous, spotting errors I missed to ensure the packet was flawless.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval without an RFE for a chief scientific officer working in computational biology and therapeutics.

How we presented the case

We documented research influence, leadership, scholarly work, and expert support. The linked article covers both O‑1A and EB‑1A; this card reports the O‑1A result only.

Read the case & client review
Illustration of Cardiovascular medicine
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Interventional Cardiologist
O‑1A
APPROVED

Cardiovascular medicine

IN OUR CLIENT’S WORDS

“They communicated effectively with my employer, which made the entire process smooth and stress-free.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for an incoming interventional cardiologist, with client feedback highlighting coordination with the employer.

How we presented the case

We assembled evidence of research influence, scholarly authorship, peer review, and expert support for the proposed clinical work.

Read the case & client review
Illustration of Dentistry
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Associate Orthodontist
O‑1A
APPROVED

Dentistry

IN OUR CLIENT’S WORDS

“I am pleased about your very, very thorough approach.”
Excerpt from this client’s O‑1 testimonial

An O‑1A extension approved without an RFE for a clinician already working at a U.S. dental clinic.

How we presented the case

We showed continuing extraordinary ability through research influence, scholarly publications, peer review, and expert opinions.

Read the case & client review
Illustration of Computer vision & robotics
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Robotics Development Engineer
O‑1A
APPROVED

Computer vision & robotics

IN OUR CLIENT’S WORDS

“They are fast and professional, handling every challenge with ease.”
Excerpt from this client’s O‑1 testimonial

An O‑1A approval for a private-sector engineer developing computer-vision and robotics technologies.

How we presented the case

We explained the significance of the client’s technical contributions, supported by independent use, scholarly work, peer review, and expert evidence.

Read the case & client review

OUR IMMIGRATION ATTORNEYS

Meet our immigration attorneys.

Legal experience for your next hire and the people already on your team.

View the full attorney directory
15 YearsOur firm’s history in employment-based immigration
47 attorneysA substantial team of immigration counsel
69,000+Combined approvals across EB‑1A, EB‑1B, NIW and O‑1
Over 95%Our firm’s reported O‑1 approval rate

Each petition is assessed on its own merits.

Victoria Chen

FOUNDER & MANAGING ATTORNEY

Victoria Chen

J.D., Attorney at Law

Browse our attorneys
Medessa Cheney

Medessa Cheney

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Alexander Bennett

Alexander Bennett

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Yajing Wen

Yajing Wen

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Jackson Larson

Jackson Larson

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David Kramer

David Kramer

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Ayesha Jain

Ayesha Jain

Attorney

Ziqian Ma

Ziqian Ma

Attorney

Boyu Wang

Boyu Wang

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Derek Tsang

Derek Tsang

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Alissa Braun

Alissa Braun

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Katelyn Reinke

Katelyn Reinke

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Mark Burkett

Mark Burkett

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Mark Tomlinson

Mark Tomlinson

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Jason Evans

Jason Evans

Attorney

Meghan Hough

Meghan Hough

Attorney

Yinan Zheng

Yinan Zheng

Attorney

Zoe Wang

Zoe Wang

Attorney

Christopher Folas

Christopher Folas

Attorney

Kim McClintock

Kim McClintock

Attorney

Yida Zhang

Yida Zhang

Attorney

Marissa Wong

Marissa Wong

Attorney

William Borene

William Borene

Attorney

Daniel Trentacoste

Daniel Trentacoste

Attorney

Lei Lei

Lei Lei

Attorney

Cameron Pardon

Cameron Pardon

Attorney

Elliot Chow

Elliot Chow

Attorney

Hannah Tyler

Hannah Tyler

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Michelle Flores

Michelle Flores

Attorney

Hannah Martell

Hannah Martell

Attorney

Griffin Garrett

Griffin Garrett

Attorney

Ashley Lago

Ashley Lago

Attorney

Annie Wang

Annie Wang

Attorney

Ashley Barreto

Ashley Barreto

Attorney

Belinda Bu

Belinda Bu

Attorney

Catalina Carbonell Lopez

Catalina Carbonell Lopez

Attorney

Chase Crowley

Chase Crowley

Attorney

Denise Xiao

Denise Xiao

Attorney

Helen Nguyen

Helen Nguyen

Attorney

Jasmine Xu

Jasmine Xu

Attorney

Jih-Leei Mao

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Attorney

Mateus Alves

Mateus Alves

Attorney

Sally Sun

Sally Sun

Attorney

Yue Yu

Yue Yu

Attorney

Arvind Pennathur

Arvind Pennathur

Attorney

Emily Chu

Emily Chu

Attorney

Helene Burns

Helene Burns

Attorney

START WITH A FREE EVALUATION

Plan the next hire. Support the team you have.

Share the employee’s background, current work authorization, and hiring or retention timeline.

Request an employer evaluation