Mayer Brown, a leading global law firm, announced the promotion of 21 of its lawyers worldwide to partner. The appointments take effect January 1, 2013.

“In addition to outstanding legal skills, these lawyers have demonstrated leadership, business acumen, excellence in client service and commitment to teamwork across practice areas and geographic boundaries, and we are delighted to welcome them as Mayer Brown partners,” said Chairman Paul Theiss. “We are confident they will continue to make significant contributions to the success of our clients as we help them address their most demanding legal and business challenges.”

The new partners are:

Luiz Gustavo Bezerra, Environmental, Tauil & Chequer/Rio de Janeiro
Mr. Bezerra is the head of the Environmental practice at Tauil & Chequer. His practice focuses on advice on environmental matters for large domestic and international corporations in the energy, chemical, forest exploration, agribusiness/food processing, infrastructure, mining, real estate and construction industries. He has extensive experience in negotiations with Brazilian public entities and also advises clients on infrastructure, energy, climate change and sustainability matters. He is professor of Environmental Law and International Environmental Law at Rio de Janeiro State University.

Jennifer J. Carlson, Corporate & Securities, Chicago
Ms. Carlson’s practice focuses on capital markets, mergers and acquisitions and general corporate counseling. She represents issuers and underwriters in a wide variety of public and private offerings of debt and equity securities and liability management transactions, including exchange offers, tender offers and consent solicitations. Her practice also includes representing buyers and sellers in public and private mergers and acquisitions, tender offers, private equity investments and other strategic transactions. She also advises companies regarding securities law compliance, NYSE and NASDAQ listing requirements and corporate governance.

Zachary A. Carrier, Banking & Finance, Chicago
Mr. Carrier represents domestic and international banks, issuers, borrowers, underwriters, conduits, hedge funds and other finance companies in a variety of finance transactions and related matters. He regularly represents clients in connection with structured finance transactions, secured and unsecured loans, commercial paper conduit programs and purchases and sales of financial assets. His securitization experience includes securitizations of trade receivables, auto and equipment loans and leases, commercial loans, residential and commercial mortgage loans, timeshare loans, insurance premium finance contracts, student loans and other asset classes.

Alan C.W. Chiu, Intellectual Property, Hong Kong
Mr. Chiu advises on a diversified range of contentious and non-contentious intellectual property and information technology matters in both Hong Kong and the People’s Republic of China. His experience includes: handling Norwich Pharmacal application and contempt proceedings in Hong Kong; assisting in defamatory lawsuits for celebrities and various entertainment matters including music and film contracts; advising on computer security, IT compliance and other Internet regulatory issues; and assisting clients in negotiations with the PRC State Food and Drug Administration. He also is experienced in antitrust law and is an accredited mediator.

Caio Cossermelli, Corporate & Securities, Tauil & Chequer/São Paulo
Mr. Cossermelli has experience in advising underwriters and issuers in several Brazilian IPOs, private placements and follow-on offerings, debt offerings and also M&A transactions. In addition, he represents financial institutions and corporate clients in financing transactions and related matters, including infrastructure projects. He is experienced in international transactions such as cross border loans, notes and bond issues.

Ann Marie Duffy, Intellectual Property, Washington, DC
Ms. Duffy is experienced in various types of intellectual property litigation, including patent and trademark infringement, theft of trade secrets and breach of contract. Her patent litigation experience has involved a range of technologies, including battery spill-containment devices, medical devices, on-line computer software, MP3 audio compression and JPEG image compression. She also has extensive experience managing large and complex e-Discovery issues. She has participated in trials before state and federal courts and in Markman hearings, discovery motion hearings and dispositive motion hearings. She also has briefed and argued appeals before US appellate courts.

Michael R. Emerson, Tax Controversy, Chicago
Mr. Emerson represents taxpayers at all stages of federal tax controversies, including during audit, in administrative appeals and before federal courts. He has extensive experience assisting clients with issues involving audit management, IRS Appeals proceedings and litigation. His controversy experience includes major corporate tax matters involving international tax and transfer pricing, substance-over-form disputes, economic substance issues and leasing transactions. He is a Certified Public Accountant and previously was with Ernst & Young.

Nina L. Flax, Corporate & Securities, Chicago
Ms. Flax focuses on representing buyers and sellers in connection with domestic and international stock and asset acquisitions and divestitures, mergers and similar transactions. She also assists clients in negotiating and establishing domestic and international joint ventures, consortiums and commercial arrangements.

Nathan B. Galer, Banking & Finance, Chicago
Mr. Galer concentrates on project finance and project development. He regularly represents lenders, investors, owners, developers and contractors in various facets of the financing and development of a wide range of complex energy, infrastructure and other projects. His experience includes preparation and negotiation of financing documentation, security documentation, construction and design agreements, procurement agreements, engineering and professional services agreements, equipment sale/purchase agreements, warranty agreements, operations and maintenance agreements, equipment transportation agreements, consulting services agreements and joint development agreements, among others.

Gerami Granello, Real Estate, Houston
Mr. Granello advises on a broad range of real estate, finance, leasing and corporate transactional matters in the United States and Latin America. His practice includes representation in: the acquisition, development, and disposition of raw land, retail shopping centers, industrial warehouses, office buildings, condominiums, apartment complexes, and ranches; the leasing of commercial office, retail, and industrial warehouse space in more than 30 markets around the country; the formation of partnerships and joint ventures; and the granting of licenses and easements.

Ethan A. Hastert, Litigation & Dispute Resolution, Chicago
Mr. Hastert has experience in areas including complex commercial litigation, antitrust, internal investigations, and electronic discovery. He is a member of Mayer Brown’s Electronic Discovery and Records Management Group and represents companies in the chemical and pharmaceutical industries and other companies in the design and implementation of electronic discovery programs, including policies and procedures for efficiently and defensibly preserving electronically stored information.

Adam L. Hudes, Litigation & Dispute Resolution, Washington, DC
Mr. Hudes focuses on representing litigants in antitrust and complex commercial litigation. He has litigated cases in numerous industries including home insulation, electronic payment services, computer hardware, medical devices, automotives, transgenic corn seed and food products. These matters have involved allegations of price-fixing, monopolization, monopsony, Robinson-Patman violations, sham litigation, false advertising and other business torts. In addition, he regularly counsels companies on marketing, distribution, and other trade practice matters.

Ryan J. Liebl, Employment & Benefits, Chicago
Mr. Liebl focuses his practice on advising public and private companies and individual executives on executive compensation related matters, including designing, drafting and administering nonqualified deferred compensation plans, excess benefit plans, equity compensation plans and agreements, cash-based incentive compensation plans and agreements, severance plans and individual employment and separation agreements. He also has extensive experience advising clients regarding employee benefits and executive compensation issues in corporate transactions.

Paula Magalhães, Corporate & Securities, Tauil & Chequer/São Paulo
Ms. Magalhães advises buyers, sellers, financial advisors and target companies on mergers and acquisitions and advises target companies in processes for going public or going private and public offers of acquisition in general.

Michael K. Marion, Tax Transactions, New York
Mr. Marion focuses on advising clients on the tax aspects of a broad range of transactions, including taxable and nontaxable mergers and acquisitions, structured and leveraged finance transactions, capital markets transactions and securitizations. He also regularly advises clients on international, corporate and consolidated return tax issues as well as financial products and derivatives, including ISDA documentation.

Jonathan Olson-Welsh, Litigation & Dispute Resolution/Construction, London
Mr. Olson-Welsh’s practice focuses on procurement and tendering advice and the drafting of national and international construction and engineering contracts. He has particular experience in the mining sector and has advised on large international projects including: the development of the mining industry in Afghanistan; the expansion of the Panama Canal; petrochemical plants in Saudi Arabia and Qatar; mining projects in Kenya, Turkey and New Mexico; and power projects in Kuwait. He provides advice on the application of procurement rules to projects and has advised on a wide variety of procurement issues.

Kristin M. Rylko, Banking & Finance, Chicago
Ms. Rylko represents commercial lending institutions, insurance companies, funds and corporate borrowers in a variety of secured and unsecured finance transactions, including investment grade and leveraged lending deals, acquisition financings, syndicated and bilateral loans and credit facilities, first lien/second lien transactions, subscription facilities, bridge loans, debt restructurings and other domestic and cross-border financing transactions.

Jeremiah M. Wagner, Banking & Finance, Chicago
Mr. Wagner has extensive experience across a range of structured finance, securitization and derivative transactions encompassing a wide range of asset classes including credit card receivables, residential and commercial mortgages, auto loans and leases, dealer floorplan loans, insurance products, trade receivables and synthetic exposures. He also represents clients in international capital markets transactions, advises on regulatory matters affecting the banking and securitization industries and represents financial institutions and companies in asset-based lending transactions and other similar financings.

Matthew V. Wargin, Restructuring, Bankruptcy & Insolvency, Chicago
Mr. Wargin represents institutional lenders, bank groups, hedge funds and other creditors in out-of-court workouts, bankruptcy proceedings and other distress situations, including advising corporate clients on distressed asset sales and acquisitions and on structuring considerations in complex debt transactions. He also has experience representing debtors in Chapter 11 proceedings. His representations further include a variety of matters involving the post-closing administration of residential mortgage backed securitization trusts, including related disputes and litigation. He also litigates matters in federal bankruptcy and district courts and has significant experience working with expert witnesses and litigating contested valuation issues.

Wilson Y.S. Wong, Real Estate, Hong Kong
Mr. Wong has experience advising on real estate-related financing and other secured and unsecured lending transactions for major banks and financial institutions operating in Hong Kong.