LAWYERS

MEMBERS OF THE FIRM

SENIOR MANAGING PARTNER

HOWARD M. CALLEJA
SENIOR MANAGING PARTNER

Email: hmc@callejalaw.com

 

Practice Areas:

Corporate Law, Environmental Law, Energy, Labor Law, Civil and Criminal Litigation, Customs, Telecommunications Law, International Law, Election Law and General Practice.

 

Professional Membership & Affiliations:

Attorney Howard "Howie" Calleja was admitted to the Philippine Bar in 1995 and to the New York State Bar in 2005. He was the former legal counsel for the Parish Pastoral Council for Responsible Voting (PPCRV) and of the Legal Network for Truthful Election (LENTE). Mr. Calleja is an incumbent director and trustee of several companies such as the St. Luke’s Medical Center College of Medicine, and The Shang Grand Tower Corporation.

 

Education /Academic Attainment:

Mr. Calleja finished his Bachelor of Science degree in Physical Therapy from the University of Santo Tomas. He obtained his Juris Doctorate Degree from the Ateneo de Manila University School of Law and his Master of Laws degree from Duke University, U.S.A. He received a Certificate in International Law from the Hague Academy of International Law, Netherlands. 

 

Law Professorial Positions & Legal Publications:

Attorney Calleja is currently a law professor at the Ateneo de Manila University School of Law. He has also taught in several educational institutions such as the Far Eastern University Institute of Law, Pamantasan ng Lungsod ng Maynila College of Law, Assumption College, and Lyceum of the Philippines. As a law professor, he handles a multitude of subjects including Torts and Damages, Transportation Law, Conflicts of Law, Property Law, Environmental Law, Election Law, Constitutional Law, Law on Sales, Obligations & Contracts, Succession Law, Public International Law, and Legal Forms. Atty. Calleja is also a lecturer in Election Law, Civil Law and International Law for the Mandatory Continuing Legal Education (MCLE). He has authored several books and journals on Torts and Damages, and Election Law.

 

Awards and Citations:

In 2000, Atty. Calleja was given the Outstanding Leadership Award by Rotary District 3800. In 2001, he was awarded the Golden Millennium Award as outstanding lawyer of the New Millennium. Atty. Calleja was also given the University Service Award for Dedicated Service for 10 year by the Ateneo de Manila University in 2016.

 

Cases Handled:

He handles civil, criminal, commercial and labor litigation. As a criminal defense lawyer, he has successfully bailed or acquitted the accused in many sensational cases in the Philippines. He is also a pioneer in the field of Family Law where he was the first in the country to be granted a Temporary Protection Order under the Anti-Violence Against Women and Their Children Act of 2004. He has successfully defended one of the biggest mining companies in the Philippines in a case involving one of the largest mining disasters in the history of the country. In another accident involving one more mining conglomerate, Attorney Calleja stood with the opposing side and was instrumental in the defense of the marginalized fisherfolk and the poor. He has assisted clients in settling multimillion peso estates both judicially and extrajudicially. In the area of Election Law, Mr. Calleja has distinguished himself as an authority from the early days of manual counting up to the recent automation of the polls, and has handled numerous elections cases.

HOWARD M. CALLEJA

SENIOR PARTNER

ANTHONY B. PERALTA
SENIOR PARTNER

Email: abp@callejalaw.com

Practice Areas:

Banking and FinanceBusiness Process Outsourcing; Capital Markets, Corporate Law, Commercial Litigation, Data Privacy and Protection, Environmental Law, Energy, Estate Planning, Foreign Investments, Government Contracts and Procurement, Labor Law, Mergers and Acquisitions, Project Finance, Securities Law, Technology Media and Telecommunications, Taxation and Transportation.

 

Professional Membership & Affiliations:

Mr. Peralta was admitted to the Philippine Bar in 1987. He is a member of the Asian Patent Attorneys Association, Intellectual Property Association of the Philippines, International Trademark Association, Integrated Bar of the Philippines (Rizal); Intellectual Property Professors Association, and the Country Representative of the Information Technology Law Association (ITECH Law). He is also a Director and past President of the Licensing Executives Society Philippines (2017-2019), and the Past President of the Intellectual Property Alumni Association.

 

Education /Academic Attainment:

Mr. Peralta finished his Bachelor of Arts degree in Philosophy from the University of the Philippines. He likewise obtained his Bachelor of Laws Degree from the University of the Philippines.  He was an ASEAN Overseas Training Scholar having attended the Intellectual Property Rights-Management Training Program in Tokyo, Japan in February 2002, sponsored by the Japan Patent Office.

 

Law Professorial Positions & Legal Publications:

Mr. Peralta is currently a law professor and the Associate Dean at De La Salle University School of Law. As a law professor, he has taught Corporation Law, Credit Transactions, Intellectual Property, Land Titles and Deeds, Legal Writing, and Mergers and Acquisitions.  He was the author of the Philippine section of International Telecommunications Law, published by BNA in London, U.K.  He is a co-author of the Philippine section of Global Privacy and Security Law published by Aspen Publishers/Wolters Kluver.

 

Awards and Citations: 

Since 2004, Mr. Peralta has been consistently cited in the Asia Pacific Legal 500, Asia Law Practice and Who's Who Legal for his work in the Corporate/Mergers & Acquisitions, Intellectual Property and Information Technology practice areas.  In January 7, 2014, he was awarded with the Ricardo J. Romulo Professorial Chair for Commercial Law. He was a Bar Lecturer in Commercial Law in 2018 at DLSU College of Law. He was accorded an Honorary Membership by the Association of Fellows and Legal Scholars of the Center for International Studies based in Vienna, Austria in 2001.

Mr. Peralta was recognized as a Global Leader  by WWL in the field of Data-Information Technology for 2021. He received significant praise from both clients and peers for his detailed understanding of complex data and technology-related legal matters.

 

Transactions Handled:

He handles intellectual property litigation and arbitration on a range of technologies. He has assisted in the structuring of settlement agreements for technology, intellectual property and privacy cases.  He has represented companies in negotiating and drafting software, hardware, internet and other information technology transactions.  He has negotiated and drafted outsourcing, external service provider agreements, web based services and online subscriber agreements, including business process outsourcing agreements. He has handled and incorporated many joint ventures between foreign and domestic corporations engaged in power generation, fast-food/restaurant services, wholesale retailing, manufacturing, information technology and transport vehicle production. He handled the acquisition by the leading consumer paper corporation of the local operations of its rival company and the due diligence in relation to the possible acquisition by the same company of another takeover target. He also handled the initial public offerings for the leading electrical distribution company, the leading broadcasting company and two real estate development companies as well as the international offering of the leading gold mining company.He has appeared in various cases involving intra-corporate disputes, insolvency, corporate rehabilitation, disputed tax assessments, unfair competition, trademark and patent infringement.  He was a private prosecutor in the Impeachment Case of former Pres. Estrada as well as in his Plunder Case before the Sandiganbayan.  He recently argued before the Supreme Court in a case involving the foreign ownership issue in Philippine Long Distance Telephone Company.



ANTHONY B. PERALTA
DONNA G. SAN LUIS-SANSANO
SENIOR PARTNER

Email: dss@callejalaw.com

 

Practice Areas:

Corporate Law, Public Bidding, Energy, Civil Litigation and General Practice.

 

Professional Membership & Affiliations:

Ms. San Luis-Sansano was admitted to the Philippine Bar in 2004. She is a member of the Integrated Bar of the Philippines (Bulacan) and the Kababaihang Manananggol ng Bulacan.

 

Education /Academic Attainment:

Ms. San Luis-Sansano finished her Bachelor of Arts degree in Legal Management from the University of Santo Tomas. She obtained her Bachelor of Laws degree from the Far Eastern University Institute of Law, Manila.

DONNA G. SAN LUIS-SANSANO
MA. CONCEPCION CLAIRE JENNIFER L. JIMENEZ-AQUINO
SENIOR PARTNER

Email: cja@callejalaw.com

 

Practice Areas:

Family Law, Corporate and Civil Litigation, Estate Planning and General Practice.

 

Professional Membership & Affiliations:

Ms. Jimenez-Aquino was admitted to the Philippine Bar in 2005She is a member of the   Integrated Bar of the Philippines (Bacolod) and the Metro Bacolod Junior Chamber Jaycees.

 

Education /Academic Attainment:

Ms. Jimenez-Aquino finished her Bachelor of Arts degree from the De La Salle University. She obtained her Bachelor of Laws degree from the University of St. La Salle.

MA. CONCEPCION CLAIRE JENNIFER L. JIMENEZ-AQUINO
MARIA KAREN RIZA B. ULIBAS-MONTERO
SENIOR PARTNER

Email: mum@callejalaw.com

 

Practice Areas:

Taxation Law, Corporate Law, Family Law, Civil Law and General Practice.

 

Professional Membership & Affiliations:

Ms. Ulibas-Montero was admitted to the Philippine Bar in 2011. She passed the Certified Public Accountancy Licensure Examination in 2006. She is a member of the Integrated Bar of the Philippines (IBP) and the Philippine Institute of Certified Public Accountants (PICPA).

 

Education /Academic Attainment:

Ms. Ulibas-Montero finished her Bachelor of Science degree in Accountancy from the Divine Word College of Bangued. She obtained her Bachelor of Laws degree from the Far Eastern University. 

MARIA KAREN RIZA B. ULIBAS-MONTERO
JEAN MARIE L. UY-YAM
SENIOR PARTNER

Email: jlu@callejalaw.com

 

Practice Areas:

Corporate Law, Estate Planning, Government Contracts and Procurement, Labor Law, Mergers and Acquisitions, Securities Law, Intellectual Property Law.

 

Professional Membership & Affiliations:

Ms. Uy-Yam was admitted to the Philippine Bar in 2012. She is a member of the Integrated Bar of the Philippines (Makati City).

 

Education /Academic Attainment:

Ms. Uy-Yam finished her Bachelor of Arts degree in Political Science from the Ateneo de Manila University. She likewise obtained her Juris Doctorate degree (Second Honors) from the Ateneo de Manila University School of Law, where she wrote a thesis entitled, “Go Ukay-ukay, Repeal of R.A. 4653, Legalizing the Commercial Importation of Used Clothing.

JEAN MARIE L. UY-YAM

JUNIOR PARTNERS

MARK B. ESPINOSA
JUNIOR PARTNERS

Email: mbe@callejalaw.com

 

Practice Areas:

Corporate Law, Gas Retailing Industry and General Practice.

 

Professional Membership & Affiliations:

Mr. Espiñosa was admitted to the Philippine Bar in 2009. He is a member of the Integrated Bar of the Philippines (Guimaras).

 

Education /Academic Attainment:

Mr. Espiñosa finished his Bachelor of Science degree in Management from the University of the Philippines, Visayas. He obtained his Bachelor of Laws degree from the University of San Agustin, Iloilo City.

MARK B. ESPINOSA
DOMINIQUE P. PASCUA
JUNIOR PARTNERS

Email: dpp@callejalaw.com

 

Practice Areas:

Corporate and Commercial Law, Labor Law and General Practice.

 

Professional Membership & Affiliations:

Mr. Pascua was admitted to the Philippine Bar in 2012. He is a member of the Integrated Bar of the Philippines (City of Manila).

 

Education /Academic Attainment:

Mr. Pascua finished his Bachelor of Arts degree in Consular and Dipolomatic Affairs from the De La Salle - College of Saint Benilde. He obtained his Bachelor of Laws degree from the Far Eastern University.

DOMINIQUE P. PASCUA

SENIOR ASSOCIATES

KATRIN JESSICA DISTOR
SENIOR ASSOCIATES

E-mail: kid@callejalaw.com

 

Practice Areas:

Civil and Criminal Litigation, Family Law, Election Law, Labor Law, and General Practice.

 

Professional Membership & Affiliations:

Ms. Distor was admitted to the Philippine Bar in 2017. She is a member of the Integrated Bar of the Philippines (Laguna).

 

Education /Academic Attainment:

Ms. Distor finished her Bachelor of Arts degree in Political Science with specialization in International Relations from St. Scholastica’s College – Manila. She obtained her Bachelor of Laws degree from Philippine Christian University. She likewise successfully completed the 47th Pre-judicature Program under the Philippine Judicial Academy.

KATRIN JESSICA DISTOR
JAKE M. FAJARDO
SENIOR ASSOCIATES

E-mail: jmf@callejalaw.com

 

Practice Areas:

Civil and Criminal Litigation, Labor Law, Election Law, and General Practice

 

Professional Membership and Affiliation:

Mr. Fajardo was admitted to the Philippine Bar in 2017. He is a member of the Integrated Bar of the Philippines (Quezon City).

 

Education/Academic Attainment:

Mr. Fajardo has a degree in Commerce major in Management from Republican College. He earned his Bachelor of Laws degree from Jose Rizal University.

JAKE M. FAJARDO

ASSOCIATES

ZYRIL FLORECE MARCHAN
ASSOCIATES

Email: zfm@callejalaw.com

 

Practice Areas:

Corporate Law, Civil and Criminal Litigation, and General Practice.

 

Membership & Affiliations:

 Mr. Marchan was admitted to the Philippine Bar in 2019. He is a member of the Integrated Bar of the Philippines.

 

Education /Academic Attainment:

 Mr. Marchan finished his Bachelor of Science degree in Commerce Major in Legal Management from the De La Salle University – Manila. He obtained his Bachelor of Laws degree from San Beda College Alabang – School of Law.

ZYRIL FLORECE MARCHAN
MA. ELIZABETH R. AFAN
ASSOCIATES

Email: era@callejalaw.com

Practice Areas:

Civil and Criminal Litigation, Family Law, Corporate Law, Labor Law and General Practice.


Professional Membership & Affiliations:

Ms. Afan was admitted to the Philippine Bar in 2020. She is a member of the Integrated Bar of the Philippines (City of Manila).

 

Education /Academic Attainment:

Ms. Afan finished her Bachelor of Arts degree in Legal Management from the University of Santo Tomas. She obtained her Juris Doctorate degree from San Beda College Alabang – School of Law.

MA. ELIZABETH R. AFAN
RYAN AARON UY
ASSOCIATES

Email: rcu@callejalaw.com

 

Practice Areas:

Civil, Criminal, and Tax Litigation, Mergers & Acquisitions, Corporate Law, Intellectual Property Law, Banking Law, and General Practice.

 

Professional Membership & Affiliation:

Mr. Uy was admitted to the Philippine Bar in 2019. He is a member of the Integrated Bar of the Philippines (Rizal-San Juan-Mandaluyong Chapter). Before joining the firm, Mr. Uy was previously employed by one of the best Tax Firms in the Philippines wherein he was able to widen his experience and knowledge in civil and tax litigation, as well as general practice in commercial law. During his stay, he was able to represent clients before the Philippine courts and quasi-judicial bodies of all levels.

 

Education / Academic Attainment:

Mr. Uy finished his Bachelor of Science degree in Management from De La Salle-College of Saint Benilde. Subsequently, he obtained his Bachelor of Law Degree from San Beda College - Alabang. 

RYAN AARON UY
CHANTAL SUE PALER
ASSOCIATES

Email: csp@callejalaw.com

 

Practice Areas: Corporate Law, Estate Planning, Family Law, Civil and Criminal Litigation, and General Practice.

 

Membership & Affiliations: Ms. Paler was admitted to the Philippine Bar in 2020. She is a member of the Integrated Bar of the Philippines (Makati).

 

Education /Academic Attainment:

Ms. Paler graduated with a degree in Bachelor of Science in Business Economics from University of the Philippines-Diliman. She obtained her Juris Doctorate degree from the Ateneo de Manila University.

CHANTAL SUE PALER
JACKIE LYN M. ARENAS
ASSOCIATES

Email: jma@callejalaw.com

 

Practice Areas:

Taxation Law, Corporate Law, Estate Planning, Real Property Law, Family Law, Civil and Criminal Litigation, and General Practice.

 

Membership & Affiliations:

Ms. Arenas was admitted to the Philippine Bar in 2020. She is a member of the Integrated Bar of the Philippines (Batangas).

 

Education /Academic Attainment:

Ms. Arenas finished her Bachelor of Science degree in Management Accounting from the University of Santo Tomas. She obtained her Juris Doctorate degree from the De La Salle University, BGC. She also studied EU Competition Law, among others, in Université Catholique de Lille, France.

 

Involvements:

Ms. Arenas was elected as Auditor in DLSU Law School Government. She was also an active member of various organizations in De La Salle University College of Law such as Paralegal Volunteers Organization, Juan De La Salle, and Lasallian Commission on Bar Operations.

JACKIE LYN M. ARENAS