American meatpacking magnateJ. Ogden Armour, left, with attorneyLevy Mayer at the U.S. Capitol in Washington D.C, 1918.Adolf Kraus, lawyer and co-founder of Mayer Brown
The two firms that now form the core of Mayer Brown were both founded in the 19th century. The US portion of the firm was founded in 1881 in Chicago, byAdolf Kraus andLevy Mayer, and was shortly thereafter known as Kraus, Mayer & Brackett. Among its earliest clients was retail giantSears Roebuck and Co.[8] After several changes in name to reflect its growing membership, the firm eventually became known in the US as Mayer, Brown & Platt.
In 2002, the firm merged with British law firm Rowe & Maw, which was established in 1895 in London, and operated under that name until joining with Mayer, Brown & Platt in 2002 to form Mayer, Brown, Rowe & Maw.[9] In 2007, the amalgamated firm shortened its name to Mayer Brown.[10]
In 2008, Mayer Brown combined withJohnson Stokes & Master (JSM), establishing an Asia office to be known as Mayer Brown JSM. In 2024, amid US-China tensions and subsequent tothe Pillar of Shame incident, the firm reorganized its Asia presence to split from its mainland China operations,[11] and saw JSM revert to its pre-merger partnership as an independent law firm headquartered in Hong Kong with offices in Shanghai and Beijing.[12][13] It is unclear which partnership - JSM or Mayer Brown - tabled the separation, but the proposition to split was reported to have been tabled mere weeks before JSM's 160th anniversary in 2023.[14]
In 2009, the firm formed an association with Brazil's Tauil & Chequer Advogados.[15] In October 2022, the firm launched its ownjoint law venture with Singapore law firm PK Wong & Nair LLC, known as Mayer Brown PK Wong & Nair PTE. Ltd.[16][17]
Mayer Brown is a signatory to thePro Bono Institute's Law Firm Pro Bono Challenge, which commits the firm to devote 3 percent of total billable time to pro bono work,[18] and a member of the UK Joint Protocol on Pro Bono Work, which stipulates that pro bono legal work must be carried out to the same standard as chargeable work.[19]
Partner John F. Halbleib represented theMilton Hershey School on a pro bono basis from 1998 to 2002.[20]
Ward Johnson, a managing partner in the firm’s Northern California office, secured the release of Ken Oliver, who had been convicted in 1997 to life in prison under California’s "three strikes" law. Oliver spent 23 years in prison before Johnson secured his release in 2017 along with a $125,000 settlement for violating Oliver’s civil rights.[22]
Attorney Brian Netter spent four years working pro bono to have the District of Columbia’s budget freed from federal control in a case tied to the 2012 Budget Autonomy Act.[23]
Partner Marcia Maack, the director of pro-bono activities for the firm, helped secure a special immigrant visa in 2017 for an interpreter who had served American forces in Iraq.[24]
In 2017 attorney Andrew Pincus represented the city ofSeattle in a pro bono lawsuit challenging the Trump administration’s threats against sanctuary cities that refused to aid in federal immigration crackdowns.[25] That same year, Pincus and others represented two Yemeni men who had been detained atDulles International Airport in Washington, D.C. after Trump signed the first ban on travelers from seven majority Muslim countries.[26]
Partners Nicole Saharsky, Michael Scodro and Marcia Goodman along with associates Minh Nguyen-Dang and Carmen Longoria-Green, obtained a landmark settlement for the players on theUS Women’s National Soccer Team (USWNT) in their 2019 equal-pay lawsuit against theUS Soccer Federation (USSF).[27] The parties agreed to settle for $24 million in backpay damages and a guarantee of equal pay going forward for all games, including for the World Cup. This is the first commitment from a major US sports federation to pay female and male athletes equally.[28]
In 2019, Mayer Brown obtained anationwide injunction against the US government and its decision to terminate temporary protected status for 60,000 Haitians.[29]
Attorneys Matthew Ingber, Christopher Mikesh, and Justin Perkins secured asylum in the United States for a 12-year old Nigerian chess prodigy and his family.[30]
Attorneys from Mayer Brown represented a group of migrants in 2021 and successfully argued that asylum seekers coming to U.S. ports of entry have rights under U.S. law that cannot be denied by preventing them from physically crossing the border.[31]
Beginning in 2021, the firm led a coalition of 20 law firms and corporate legal departments working to evacuate nearly 150 Asian University for Women (AUW) students in Afghanistan and place them at universities throughout the U.S. to continue their studies.[32]
Legal 500 Asia Pacific 2023: ranked in 40 practice categories.[33]
2023City Bar Justice Center Award for commitment to promoting racial, social, and economic justice through philanthropy and pro bono legal work.[34]
IFLR Asia Pacific Awards 2021: “Financial Services Regulatory Team of the Year” and "High-Yield Deal of the Year" Awards[35]
Received a perfect score on the Human Rights Campaign Foundation'sCorporate Equality Index 2021.[36]
2020 Asia IP Awards: "Hong Kong Copyright Law Firm of the Year"[37]
The Law Society of Hong Kong's 2020 Pro Bono and Community Service Award: "Distinguished Pro Bono Law Firm Award" and "Silver Law Firm Award for Pro Bono"[38]
Law360 Firm of the Year 2016-2020[39] and Practices of the Year for: Appellate,[40] Banking,[41] Benefits,[42] Consumer Protection,[43] Environmental,[44] Project Finance,[45] Securitizations,[46] and Tax.[47]
OnLaw360's "Global 20" 2019 list of law firms doing the most substantial, complex and diverse global work[48]
34 top-tier national and 80 top-tier metropolitan Best Law Firms 2019 rankings[49]
Earned the highest overall scores in client service performance among law firms in the 2019 BTI Client Service 30.[50]
Received Private Equity, Projects & Energy and Real Estate deal of the year honors at theChina Law & Practice Awards 2018.[51]
Mayer Brown named Top Law Firm for Training Contracts and Vacation Schemes at AllAboutLaw Awards 2018[52]
The firm representedPhillip Morris USA before the U.S. Supreme Court inPhilip Morris USA v. Williams which held that a jury may not punish a defendant for injuries suffered by non-parties.[84]
Mayer Brown representedSpokeo before the U.S. Supreme Court inSpokeo v. Robbins, a 2015 case with broad implications for class action suits.[85]
During the COVID-19 pandemic, the firm advised Goldman Sachs Lending Partners LLC on a $6.8 billion financing for United Airlines MileagePlus loyalty program.[86]
Mayer Brown helped Citibank recover $500 million[87] in mistakenly wired funds[88] in a multi-year case that was resolved in 2022.[89]
The firm representedNestle in a $7.15 billion agreement withStarbucks Corporation for the perpetual marketing and distribution rights of products including Starbucks, Seattle's Best Coffee, Starbucks Reserve, Teavana, Starbucks VIA and Torrefazione Italia.[90] The transaction was noted for its importance in expanding the business reach of both companies.[91]
Refco was a New York-based broker of commodities and futures contracts. In 2005, the company filed for bankruptcy after significant evidence of accounting fraud surfaced.[92] In the wake of the collapse, a lawsuit was filed in 2007 against Mayer Brown and one of its partners, Joseph Collins.[93][94] In November 2012, Collins was found guilty on multiple charges of conspiracy and fraud for his role in preparing Refco's IPO.[95][96] Mayer Brown agreed to pay an undisclosed sum to settle legal claims that it "aided a $1.5 billion fraud scheme that produced a flurry of criminal convictions.”[97]
Role in the removal of a Tiananmen Square massacre statue
The law firm issued a letter toHong Kong Alliance,[100] the pro-democracy organization which had erected the statue, requesting that the sculpture be removed. The request to remove the statue attracted global criticism.[101] Danish foreign ministerJeppe Kofod raised the matter with theChinese government[102] while United States SenatorPat Toomey criticized the removal attempt as an attempt to "rewrite history".[103] Galschiøt, the sculpture's creator, compared the law firm's handling to Italian mafia methods[104] and said, "I believe that Mayer Brown is morally and ethically responsible for helping to destroy the only mark of remembrance of the Tiananmen peace plan that exists on Chinese territory."[104]
In response, the university defended its position by saying that the decision was based on “the latest risk assessment and legal advice”.[105] In a statement, Mayer Brown said, "We were asked to provide a specific service on a real estate matter for our long-term client, the University of Hong Kong... Our legal advice is not intended as commentary on current or historical events."[106] This response prompted the press and activists to draw comparisons with the law firm's reaction following themurder of George Floyd.[107][108] The firm had issued a statement following Floyd's murder in June 2020, that "as members of the legal community, we bear a special and heightened responsibility. We understand that the rule of law requires that everyone, and especially those in power, be held accountable for their actions."[109]
Two days after the removal deadline set by the law firm, and while the sculpture was still in place despite the deadline having already passed, Mayer Brown confirmed that they would stop representing the university, one of the Mayer Brown legacy firmJohnson Stokes & Master's oldest clients, regarding the sculpture removal.[110]
The decision to withdraw from representing the university came under heavy fire, with Vice Chairperson of the Chinese People's Political Consultative Conference and former Chief Executive of Hong Kong Leung Chun Ying calling for a China-wide boycott of Mayer Brown.[111]
On 2 December 2024, Mayer Brown announced its separation fromJohnson Stokes & Master,[112] which it had merged with in 2008. It was reported that the appearance of US political control, manifested in the Pillar of Shame incident, was a notable cause for the decision to separate.[113]
^"Danish government raises concerns over University of Hong Kong's removal order for Pillar of Shame statue".South China Morning Post. October 16, 2021. Archived fromthe original on October 16, 2021.'For long, I have expressed my serious concern about developments in Hong Kong. And we ... have raised the matter [of the statue] in Beijing,' the country's foreign minister Jeppe Kofod said in a statement first reported in Danish media. 'The freedom to express opinions peacefully – through speech, art or other means – is a fundamental right of all human beings. This goes for Hong Kong too.'
^"A Hong Kong university orders the removal of a memorial to the Tiananmen massacre".NPR. Archived fromthe original on October 13, 2021.The firm told Hong Kong Free Press that it was being retained "as outside counsel [to] help our clients understand and comply with current law." "We were asked to provide a specific service on a real estate matter for our long-term client, the University of Hong Kong," the firm said. "Our legal advice is not intended as commentary on current or historical events."
^"Rights groups, U.S. senators blast Mayer Brown over Tiananmen statue".Reuters. October 13, 2021. Archived fromthe original on October 14, 2021."American firms should be ashamed to be complicit" in the statue's removal, Cruz told journalist Eli Lake in a Substack column published Wednesday. Graham in the article lamented that "American law firms are doing the bidding of the Communist Party." A spokesperson for Graham declined to comment further. Cruz's office did not respond to a request for comment.
^"Statement from Mayer Brown on the Death of George Floyd".Mayer Brown. June 1, 2020. Archived fromthe original on October 12, 2021.At Mayer Brown, our core values are grounded in the principle that every individual—each and every individual—is equally worthy of respect and appreciation. We recognize the value that diversity and inclusion bring to our business and to our communities and we have a corresponding responsibility to speak up when our core values are undermined. As members of the legal community, we bear a special and heightened responsibility. We understand that the rule of law requires that everyone, and especially those in power, be held accountable for their actions. Those who failed to protect or even recognize George Floyd's human rights should be held accountable to the fullest extent of the law. Mayer Brown stands in solidarity with all who lawfully seek justice for those who have been denied their civil liberties and human rights, and particularly when that denial has such tragic and irreversible consequences.
$1.983 billion (2025)[4]
