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At Xenos Law Group, we specialize in both corporate-based and family-based immigration, offering expert legal guidance tailored to your unique needs. For businesses, we provide strategic solutions to help companies navigate the complexities of bringing in top talent, managing international workforce needs, and ensuring compliance with immigration laws. Whether you're sponsoring foreign employees, securing work visas for executives, or addressing immigration matters for investors, we are here to guide you every step of the way.
In addition to corporate immigration, we also offer comprehensive services for family-based immigration, assisting individuals in reuniting with loved ones through the visa and green card process. Whether you’re bringing family members to the U.S. or securing a path to permanent residency, our compassionate team is dedicated to helping families stay together.
We combine integrity, expertise, and personalized service to help you navigate the immigration process with confidence. Let us help you transform immigration challenges into opportunities—whether for your business or your family’s future.
We specialize in corporate- and family-based immigration cases, including:
Employment-Based Nonimmigrant Visas:
TN (Canadian & Mexican)
E1 / E2 (Treaty Traders and Investors)
E3 (Austrialian) (Speciality Occupation)
H-1B (Speciality Occupation)
H-1B1 (Singapore & Chile) (Specialty Occupation)
H-2B (Seasonal workers)
L-1A / L-1B (Intracompany Transfers & New Office)
O-1A / O-1B (Extraordinary Abilities)
R-1 (Religious Workers)
Employment-Based Immigrant Visas / Green Cards:
EB-1A (Extraodinary Ability)
EB-1C (Multinational Managers)
EB-2 NIW (National Interest Waivers)
EB-2 PERM (Advanced Degree or Exceptional Ability)
EB-3 PERM (Professional, Skilled, & Unskilled)
EB-4 (Religious Workers)
EB-5 (Investors)
And more...
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Practice Area
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Chat withState: District of Columbia
Acquired: 2016
No misconduct found
State: New York
Acquired: 2015
No misconduct found
10 Wallace Lane, Washington, PA, 15301
23 Client Reviews
Showing 6 - 10 of 23 reviews
Posted by Dodla Siddarth S | October 10, 2025 | Hired Attorney | Immigration
Expert Legal Support That Made My L-1A Approval Effortless
Sergio and his team helped me with my L-1A new office petition, and I’m thrilled to share that it was approved without an RFE. Their expertise, precision, and clear communication made the entire process smooth and stress-free. I truly appreciated the personal attention and the way they handled every ...
Posted by anonymous | April 15, 2025 | Hired Attorney | Immigration
Green Card
Me and my husband did our green card process through Sergio’s law firm and I couldn’t be happier with how smoothly it went . We had a deadline for applying for the green card and we managed to collect all the documents and evidence in 48 hrs , of course with Sergio’s help and the help of his assista...
Posted by Tatiana Londono | March 28, 2025 | Hired Attorney | Immigration
No need to interview anyone else!!!!
After years of frustration with a well-known corporate law firm that yielded no progress on my E2 visa application, I was referred to Sergio Athanasso. From our first interaction, Sergio’s professionalism and dedication were evident. He immediately took control of my case, meticulously addressing eve...
Posted by anonymous | February 07, 2025 | Hired Attorney | Immigration
Knowledgeable and great legal team
It was a pleasure working with Sergio Antonio Athanasso. He was very knowledgeable about my case and provided very helpful legal guidance. His team was extremely helpful. We were applying for an expedited EB1a visa which was approved within 2 weeks. I 100% recommend Sergio.
Posted by Sukhpal | January 23, 2025 | Hired Attorney | Immigration
Excellent end to end service in obtaining my E2 business visa
Sergio was very helpful and expertly guided me through each step of my application and even my interview process. He helped me prepare for my interview at the US consulate in London and was very meticulous in ensuring I had all the necessary paperwork as well as prepping me for any questions that I m...
"What sets Sergio apart is his unwavering dedication to his clients. He goes above and beyond to ensure that their needs are met, providing personalized, thoughtful guidance throughout the process. His professionalism, attention to detail, and commitment to delivering results make him a standout in the field. If you are seeking an immigration attorney who is truly invested in achieving the best possible outcome, I highly recommend Sergio Athanasso."
Contracts and agreements lawyer
Member
2014
JD - Juris Doctor
2011
BS - Bachelor of Science
Spanish
English
Greek
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