Jeffrey Chen joined Bartko Zankel Bunzel & Miller as principal attorney in Bartko Zankel Bunzel & Miller.

Jeffrey Chen is an intellectual property litigator who focuses his practice on high-stakes patent infringement disputes.

Katherine Ann Roberts was promoted to partner of Sidley Austin LLP in Los Angeles.

Sidley Austin LLP announced Katherine Ann Roberts has been elected partner in Los Angeles, effective Jan. 1. Roberts practices in the firm's labor, employment and immigration group. She handles wage-and-hour class and collective actions involving state and federal overtime exemptions, meal and rest period claims and claims under the California Private Attorney General Act (PAGA). She also defends employers against claims of discrimination, harassment, wrongful termination, failure to accommodate and other causes of action arising under state and federal law.

Chang Derek Liu was promoted to partner of Wilson Sonsini Goodrich & Rosati in San Francisco.

Wilson Sonsini Goodrich & Rosati announced Chang Derek Liu has been elected partner in San Francisco, effective Feb. 1. Liu focuses his practice primarily on the technology and life sciences industries. His transactional experience includes public and private company mergers, acquisitions, and divestitures; tender and exchange offers; joint ventures; minority investments; and other strategic corporate transactions, representing both strategic and private equity clients.

John Patrick McGaraghan was promoted to partner of Wilson Sonsini Goodrich & Rosati in Palo Alto.

Wilson Sonsini Goodrich & Rosati announced John Patrick McGaraghan has been elected partner in Palo Alto, effective Feb. 1. McGaraghan focuses on intellectual property counseling and licensing, and the drafting and negotiation of strategic commercial contracts. He also assists companies with mergers, acquisitions, divestitures, and financing transactions. Additionally, McGaraghan works with public and private companies in the hardware, semiconductor, software, Internet, media, social networking, and advertising industries.

Eric A. Kauffman was promoted to partner of Cooley LLP in San Diego.

Cooley LLP announced Eric A. Kauffman has been elected partner in San Diego, effective Jan. 1. Kauffman's practice encompasses both employment litigation and counseling. He provides strategic support to leading technology and life sciences companies, and their private equity and venture capital sponsors, on a wide variety of employment law matters.

Wendy Lynn Devine was promoted to partner of Wilson Sonsini Goodrich Rosati in San Francisco.

Wilson Sonsini Goodrich & Rosati announced Wendy Lynn Devine has been elected partner in San Francisco, effective Feb. 1. Devine focuses her practice on intellectual property litigation, with a concentration in patent litigation and counseling. She counsels and represents clients in matters involving various technologies and processes, including biotechnology, biosimilars, pharmaceuticals, medical methods, trademarks, and trade secrets.

Rebecca Lee DeGraw was promoted to partner of Wilson Sonsini Goodrich & Rosati in Palo Alto.

Wilson Sonsini Goodrich & Rosati announced Rebecca Lee DeGraw has been elected partner in Palo Alto, effective Feb. 1. DeGraw serves as outside general counsel and advises clients at all stages of development on a range of corporate and securities matters. She has represented both companies and investors in venture capital financings, and buyers and sellers in mergers and acquisitions.

Matthew John Bresnahan was promoted to partner of Wilson Sonsini Goodrich & Rosati in San Diego & Los Angeles.

Wilson Sonsini Goodrich & Rosati announced Matthew John Bresnahan has been elected partner in San Diego and Los Angeles, effective Feb. 1. Bresnahan serves as primary outside intellectual property counsel to life sciences companies within the biotechnology, molecular biology, pharmaceutical, diagnostic, and medical device industries in Southern California. His practice focuses on all aspects of IP, including strategic patent counseling, patent prosecution, licensing, and litigation.

Julia Lee was promoted to counsel of Goodwin Procter LLP in Los Angeles.

Goodwin Procter LLP announced Julia Lee has been promoted to counsel in Los Angeles, effective Jan. 1. Lee is a member of the firm's business law department and a member of its real estate, REITs + real estate capital markets group.

Ruchun Ji was promoted to partner of Sidley Austin LLP in Palo Alto.

Sidley Austin LLP announced Ruchun Ji has been elected partner in Palo Alto, effective Jan. 1. Ji practices in the firm's emerging companies and venture capital practice. His work focuses on general corporate and business law, including China-related mergers and acquisitions, private equity/venture capital financings, joint ventures and public securities offerings. He also advises multinational and startup companies in a number of sectors including biopharmaceutical, wireless media, internet and manufacturing.

Joshua Blank joined UC Irvine School of Law as professor of law in Irvine.

UC Irvine School of Law announced Joshua Blank has joined as a professor of law. He joins UCI Law from New York University School of Law where, besides being a professor of tax law, Blank is vice dean for technology-enhanced education, and faculty director of the school's Graduate Tax Program.

Shannon Renee Delahaye was promoted to partner of Wilson Sonsini Goodrich Rosati in Palo Alto.

Wilson Sonsini Goodrich & Rosati announced Shannon Renee Delahave has been elected partner in Palo Alto, effective Feb. 1. Delahaye works with companies and underwriters in connection with initial public offerings and other capital markets transactions. She also advises public companies on SEC compliance, disclosure, and corporate governance matters, and complex securities law issues.

Matthew Todd Wiltermuth was promoted to partner of Wilson Sonsini Goodrich & Rosati in Palo Alto.

Wilson Sonsini Goodrich & Rosati announced Matthew Todd Wiltermuth has been elected partner in Palo Alto, effective Feb. 1. Wiltermuth advises clients in strategic commercial and intellectual property transactions, including collaboration and partnering arrangements, technology licensing and acquisitions, mergers and acquisitions, research and development agreements, and manufacturing, supply, and distribution arrangements, primarily in the pharmaceutical, biotechnology, medical device, and life sciences industries.

Daniel Jedediah Knauss was promoted to partner of Cooley LLP in Palo Alto.

Cooley LLP announced Daniel Jedediah Knauss has been elected partner in Palo Alto, effective Jan. 1. Knauss' litigation practice focuses on intellectual property, with an emphasis on life sciences. He litigates patent infringement and contract disputes concerning a variety of technologies, including cancer medicines, antiviral therapeutics, biofuels, agriculture and medical devices.

Bradley Muchard Libuit was promoted to partner of Cooley LLP in San Francisco.

Cooley LLP announced Bradley Muchard Libuit has been elected partner in San Francisco, effective Jan. 1. Libuit practices corporate and securities law. He represents companies at all stages of their life cycle, from startups to large public companies, as well as venture capital firms and other institutional investors.

Ellen R.Z. Rosen joined The Jewish Community Foundation of Los Angeles as general counsel in Los Angeles.

The Jewish Community Foundation of Los Angeles announced Ellen R.Z. Rosen has joined as general counsel. Rosen will work on supporting The Foundation's endowment funds and help to grow endowments and other charitable giving funds. Rosen succeeds Susan C. Mattisinko, who held the position since 2012.

Michelle Rubalcava joined Nielsen Merksamer Parrinello Gross & Leoni LLP as senior counsel in Sacramento.

Nielsen Merksamer Parrinello Gross & Leoni LLP announced Michelle Rubalcava has joined as senior counsel in Sacramento. Rubalacava has spent 20 years working in and around state politics and as a health care attorney and legislative advocate. At the firm, she will work on a variety of issues, including health care, environmental regulation, financial services, local government administration and services and the initiative and referendum process.

Brandon Michael Jacob Gantus was promoted to partner of Wilson Sonsini Goodrich & Rosati in Palo Alto.

Wilson Sonsini Goodrich & Rosati announced Brandon Michael Jacob Gantus has been elected partner in San Francisco, effective Feb. 1. Gantus represents companies in compensation and employee benefits matters, with a particular emphasis on mergers and acquisitions and capital markets transactions. He advises clients on the design, drafting, and administration of equity-based compensation programs; employment, consulting, retention, severance, change in control, and deferred compensation arrangements; and the associated tax, accounting, ERISA, and securities law implications.

Adam Shaun Bloom was promoted to partner of Wilson Sonsini Goodrich & Rosati in Palo Alto.

Wilson Sonsini Goodrich & Rosati announced Adam Shaun Bloom has been elected as partner in Palo Alto, effective Feb. 1. Bloom advises clients on general business and corporate law matters. He works with public and private technology companies, as well as investment banks, venture capital firms, and private equity firms. Bloom also handles complex transactions and deals involving novel structures.

Michael S. Didiuk joined Perkins Coie LLP in San Francisco.

Perkins Coie LLP announced Michael S. Didiuk has joined its investment management practice as a partner in San Francisco. During his time at the U.S. Securities & Exchange Commission, Didiuk headed examinations of registered investment advisers to cryptoasset funds, hedge funds, private equity funds, registered investment companies and family offices. He also counseled on issues under the Investment Company Act of 1940 and the Investment Advisers Act of 1940, and coordinated across divisions on digital currency and marketplace lender matters.

Irene Inkyu Yang was promoted to partner of Sidley Austin LLP in San Francisco.

Sidley Austin LLP announced Irene Inkyu Yang has been elected partner in San Francisco, effective Jan. 1. Yang is a member of the firm's intellectual property litigation practice and represents clients in patent cases across a broad range of industries and technologies, including computer networking and telecommunications, Internet software and e-commerce, video conferencing, operating systems, semiconductors, peritoneal dialysis, large volume infusion pumps, vehicle and asset tracking, biometric fingerprint sensors, needleless intravenous connectors, architectural lighting fixtures and electronic educational toys.