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About Us

Client-centric Approach

40 years of experience

Established 40 years ago, our law firm boasts extensive experience in a range of legal areas. Our team of skilled lawyers is committed to delivering exceptional service, personalized attention, and timely solutions in matters ranging from civil litigation and immigration law to probate matters and family law. We have earned a reputation for our dedication to achieving the best possible outcome for each client we serve, and we take pride in the long-standing relationships we have built with them over the years.

Jonathan Cosgrove

Principal Solicitor

Jonathan Cosgrove is a graduate of UCD and was admitted to Roll of Solicitors in March 2007. Jonathan has extensive experience in general practice and in particular specialises in conveyancing, immigration, family law, litigation and the administration of estates.

Aidan Stapleton

Founder & Consultant Solicitor

Aidan Stapleton is the founder of the practice which was founded by him in 1983. After 40 years in practice and at the helm, Aidan acts in a consultancy capacity and passed the Principal's baton to Jonathan Cosgrove , Solicitor who now continues to develop the ethos He has gained a wealth of experience over four decades having specialised primarily in litigation in the area of personal injury work on behalf of plaintiffs. Having also represented the interest of a major insurance company in Defendant litigation, he has accumulated invaluable expertise and insights in all aspects of litigation.

Manus Sweeney

Consultant Solicitor

Qualified as Solicitor in 1979. Worked in general practice law firms in Liberty Hall, Dublin and in Tipperary before setting up his own successful general practice law firm in Merchants Quay Dublin in 1984. Moved practice to Capel Building, Mary’s Abbey in 2008. Extensive litigation experience which he continues to apply to current cases.

Zoe Lo


Zoe is a UCD & The Honourable King's Inns graduate who has recently been admitted to Roll of Solicitors in 2024 with the Law Society of Ireland.

Zoe is fluent in both Cantonese and English with expertise in immigration, immigrant investment, conveyancing and litigation.

Fiona Strain

Office Manager

Fiona will probably be your first point of contact when you reach our offices. A graduate of both Science UCD and the Marketing Institute of Ireland, Fiona has been associated with ATS for many years, marketing our firm and finally stepping into the position of Office Manager 10 years ago. Fiona also holds an Advanced Diploma in Immigration and Asylum Law from Kings Inns.

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