Youssef + Partners Attorneys
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Youssef + Partners Attorneys is well placed to provide ‘timely, strategic advice on even the most intricate matters’, with regular appearances before major arbitration institutions, including the ICC, DIAC, ICSID, CRCICA and SCC, as well as representation before ad hoc arbitrations under the UNCITRAL Rules. The firm is particularly noted for its expertise in public international law and investment treaty arbitration. Founding partner Karim A. Youssef ’stands out as a practitioner of exceptional calibre’, bringing his skill to the gamut of high-value, international arbitrations. October 2024 saw the arrival of seasoned foreign practitioner Paul Neufeld from Locke Lord LLP, which further cemented the firm’s cross-border capabilities. César Ternieden is another recommended name.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘Proactive approach, ensuring clients receive timely, strategic advice on even the most intricate matters. Tailored solutions with flexibility.’
- ‘Karim A. Youssef stands out as a practitioner of exceptional calibre: rigorous technical expertise, remarkable attention to detail and efficiency, ability to pair deep legal knowledge with a pragmatic, solution-driven mindset.’
Key clients
- Cementos La Union SA (and Aridos Jativa) (CLU)
- Al-Kholoud for Touristic and Real Estate Development S.A.E.
Work highlights
Successfully represented Damietta International Ports Company in a commercial claim against the Egyptian state involving values in excess of $2.3bn.


