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Dan Purcell has extensive experience in a broad range of complex civil and criminal litigation, with particular focuses representing companies and individuals accused of professional misconduct, fraud, or racketeering and in intellectual property matters. He has successfully represented companies—large and small—and individuals in RICO, legal malpractice, copyright, patent, antitrust, trade secret, trademark, and civil rights cases. He also maintains an active pro bono practice and has also successfully represented pro bono clients in matters ranging from habeas corpus petitions to Clean Water Act suits.

Mr. Purcell has tried, arbitrated, and mediated cases in federal and state courts in California, New York, Delaware, and the District of Columbia. He was awarded the 2012 California Lawyer magazine Attorney of the Year award for achievements in pro bono work for overturning the unjust conviction of Caramad Conley, a man imprisoned for over 18 years for a crime he did not commit because of undisclosed payments to the critical prosecution witness and perjured testimony by that witness and by a San Francisco homicide inspector. He was also part of the Keker, Van Nest & Peters trial team that successfully represented Google Inc. in its potentially billion-dollar copyright and patent litigation against Oracle America, Inc. over the future of Google’s successful Android smartphone operating system, persuading the jury to return a verdict of no liability and zero damages in Google’s favor.

His other recent achievements include winning dismissal at the pleading stage of a RICO lawsuit against a real-estate brokerage firm accused of artificially inflating the value of a series of real properties, obtaining summary judgment in both a federal multi-district and a consolidated California antitrust lawsuit against a major automobile manufacturer, defeating a temporary restraining order sought against 18 individuals accused of trade secret misappropriation in connection with the formation of a new insurance brokerage business, and assisting an individual in obtaining what has been reported as the largest settlement of a wrongful conviction lawsuit ever paid by the City and County of San Francisco.

Dan Purcell has extensive experience in a broad range of complex civil and criminal litigation, with particular focuses representing companies and individuals accused of professional misconduct, fraud, or racketeering and in intellectual property matters. He has successfully represented companies—large and small—and individuals in RICO, legal malpractice, copyright, patent, antitrust, trade secret, trademark, and civil rights cases. He also maintains an active pro bono practice and has also successfully represented pro bono clients in matters ranging from habeas corpus petitions to Clean Water Act suits.

Mr. Purcell has tried, arbitrated, and mediated cases in federal and state courts in California, New York, Delaware, and the District of Columbia. He was awarded the 2012 California Lawyer magazine Attorney of the Year award for achievements in pro bono work for overturning the unjust conviction of Caramad Conley, a man imprisoned for over 18 years for a crime he did not commit because of undisclosed payments to the critical prosecution witness and perjured testimony by that witness and by a San Francisco homicide inspector. He was also part of the Keker, Van Nest & Peters trial team that successfully represented Google Inc. in its potentially billion-dollar copyright and patent litigation against Oracle America, Inc. over the future of Google’s successful Android smartphone operating system, persuading the jury to return a verdict of no liability and zero damages in Google’s favor.

His other recent achievements include winning dismissal at the pleading stage of a RICO lawsuit against a real-estate brokerage firm accused of artificially inflating the value of a series of real properties, obtaining summary judgment in both a federal multi-district and a consolidated California antitrust lawsuit against a major automobile manufacturer, defeating a temporary restraining order sought against 18 individuals accused of trade secret misappropriation in connection with the formation of a new insurance brokerage business, and assisting an individual in obtaining what has been reported as the largest settlement of a wrongful conviction lawsuit ever paid by the City and County of San Francisco.

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Court Denies Trump’s Efforts to Undo Injunction Blocking “Sanctuary Cities” Exec. Order

July 24, 2017

A U.S. District Court has denied the federal government’s request to reconsider a preliminary injunction blocking President Donald Trump’s Executive Order defunding “sanctuary jurisdictions.” Read more

Q&A With Pro Bono Lawyer Who Helped Block Trump's Sanctuary Executive Order

04/26/2017

The nationwide injunction to block Trump's executive order defunding sanctuary cities was a win for lawyers for Santa Clara County and their pro bono counsel at Keker Van Nest & Peters. Read more

SF Federal Judge Blocks Trump Order

April 26, 2017

Keker, Van Nest & Peter's win blocking President Trump's Executive Order to defund "sanctuary jurisdictions" was featured in the Daily Journal Read more

Between Trump and his Justice Department lawyers, a vast disconnect

04/26/2017

Keker, Van Nest & Peter's win blocking Pres. Trump's Executive Order to defund "sanctuary jurisdictions" was featured in Alison Frankel's On The Case column for Reuters. Read more

County of Santa Clara Wins Nationwide Injunction of Trump’s Executive Order Defunding “Sanctuary Jurisdictions”

4/25/2017

In a historic ruling issued today, U.S. District Court Judge William H. Orrick granted the County of Santa Clara’s request to temporarily enjoin President Trump and his administration from enforcing an Executive Order provision that would withdraw all federal funding from the County and jurisdictions across the country deemed “sanctuary jurisdictions.” Read more

Trump Crackdown Confronts Sanctuary Fight, Skeptical Judge

04/14/2017

During a recent hearing in which Keker, Van Nest & Peters represented Santa Clara County, Bloomberg news reported that Trump’s Executive Order Targeting Sanctuary Jurisdictions was met with skepticism from a federal judge. Read more

Two Keker, Van Nest & Peters Trial Teams Win CLAY Awards

03/15/2017

Eleven lawyers from two Keker, Van Nest & Peters trial teams representing Google and Arista received California Lawyer of the Year awards from the Daily Journal for intellectual property trial wins. Read more

Keker, Van Nest & Peters Wins Two Top Defense Verdicts of 2016

February 17, 2017

Bob Van Nest led two Keker, Van Nest & Peters trial teams on behalf of clients Google and Arista, respectively, that were recognized as top defense verdicts in California. Read more

Trial Victory for Google Wins Top Defense Verdict Award for 2016

February 17, 2017

The jury accepted Google’s “fair use” defense in the copyright case, zeroing out Oracle’s billion dollar claim. Read more

Keker, Van Nest & Peters Sues Trump over Sanctuary Jurisdictions Order

February 09, 2017

In conjunction with the County of Santa Clara, KVP attorneys have sued the Trump Administration over the President’s Executive Order threatening to deny “sanctuary jurisdictions” federal funds. Read more

IP Group of the Year: Keker & Van Nest

January 25, 2017

Trial wins for Google and Arista in high stakes patent and copyright cases led to Keker & Van Nest being named IP Group of the Year by Law360. Read more

How Oracle Went from Nine Zeros to One Zero

06/01/2016

Google's lead attorney Robert Van Nest and his team won an epic victory in a courtroom battle between two Silicon Valley giants. Read more

Victories for Instacart, Qualcomm, and the San Diego County Water Authority Earn Recognition in the Recorder's Litigation Department of the Year Awards

02/26/2016

The awards recognize California litigation practices that delivered exceptional results on their clients' most critical and challenging matters. Read more

Keker, Van Nest & Peters Wins California's Top Plaintiff's Verdict by Dollar

02/16/2016

John Keker and his team brought in nearly $235 million for the San Diego County Water Authority. The big win was a key installment in California's ongoing water wars, made increasingly urgent by four dry years. Read more

Keker Attorneys Help Children Gain Asylum

12/29/2015

Thousands of unaccompanied minors fled South and Central American countries, and ended up in a complicated asylum and immigration system with no one to guide them through it. Read more

Advancing Equal Access to Justice

11/12/2015

Dan Purcell will report on private bar pro bono support in the representation of detained refugee children, the initial lack of infra-structure, and great language diversity. Read more

$44M Awarded in Water Case - Damages Follow $188M Ruling in Suit Over Rates

10/13/2015

John Keker, Dan Purcell and their team secured another victory for the San Diego County Water Authority. Read more

Critical Insurance Issues for your Next Mediation

09/30/2015

Dan Purcell will discuss how to settle your next complex civil case involving insurance issues. Read more

Keker & Van Nest Named one of the Top Pro Bono Firms of 2015

09/15/2015

Keker & Van Nest's sterling work on a slew of legal issues facing undocumented immigrants and major win to halt preemptive environmental litigation by Shell Gulf Oil of Mexico Inc., secured its place among Law360's Pro Bono Firms of 2015. Read more

Court Rules San Diego DA’s Denial of Sentencing Relief to Juveniles Unlawful

07/27/2015

Keker & Van Nest worked with the ACLU to save children from being criminalized more harshly than adults. Read more

Prop. 47 also reduces some juvenile offenses, state court rules

07/27/2015

Keker & Van Nest helps create a brighter future for nonviolent juvenile offenders in California. Read more

San Diego Owed $188M Over Alleged Water Row Overcharges

07/17/2015

John Keker and his team win a major victory for the San Diego region. Read more

The Internet’s Own Boy: A Discussion of U.S. v. Aaron Swartz and the Prosecution and Defense of Cyber-Crime

01/21/2015

Filmmaker and Director of The Internet’s Own Boy, Brian Knappenberger; Aaron Swartz’s attorneys Keker & Van Nest Partners Elliot Peters and Dan Purcell, and a distinguished panel will address this critical subject. Read more

Aaron Swartz Was No Criminal

11/18/2014

Dan Purcell, one of Swartz' lawyers, writes about the spiteful and unreasonable charges that led to his suicide—and MIT's gutless support of his prosecutors. Read more

New Mission for Lawyers: Free Aid to Young Immigrants

10/01/2014

The Wall Street Journal profiles Keker & Van Nest's pro bono efforts to help Central American minors. Read more

Keker & Van Nest Grants $60K to Protect Unaccompanied Minors from Deportation

09/30/2014

Bay Area resources currently overwhelmed by more than 2,000 children seeking asylum. Read more

SF Considers Funding Legal Aid for Children Who Crossed the Border

09/10/2014

Led by Keker & Van Nest Partner Dan Purcell, the firm is organizing support throughout northern California. Read more

Keker & Van Nest Wins $3.5 Million Settlement in Wrongful Conviction Case

07/12/2014

Dan Purcell, Eric MacMichael and their team fought for Caramad Conley, who spent 18 years in prison after being wrongfully convicted in a double-murder case. Read more

Keker & Van Nest Scores for Google in Patent Proxy Fight With BT

05/27/2014

The U.S. Court of Appeals for the Federal Circuit refused to revive patent infringement claims targeting Google Inc. over its lucrative Adsense program. Read more

Historic Win for County Water Authority over MWD Villains

04/27/2014

Keker & Van Nest helped the San Diego County Water Authority triumph in its long-standing battle with the Metropolitan Water District of Southern California over millions in water transportation fees. Read more

Keker & Van Nest Named 2013 Pro Bono Firm of the Year

09/10/2013

The firm was chosen for Law360's annual pro bono series for notable work ranging from pressing national issues to life-altering representations of individual clients. Read more

Bob Van Nest and Christa Anderson Lead Google to Victory in Patent Infringement Case

04/18/2013

Suffolk Technologies alleged the Google Adsense advertising placement technology infringed one of Suffolk’s patents. Read more

Keker & Van Nest Awarded Top Defense Verdict of 2012

02/13/2013

Christa Anderson offers her insights into how Keker & Van Nest defeated Oracle Corp.'s $6 billion copyright and patent case on behalf of Google. Read more

Aaron Swartz: prodigy, Internet activist, and entrepreneur

01/14/2013

Like so many people around the world, we are devastated by the death of our client Aaron Swartz. Read more

23 Keker & Van Nest Attorneys Named "Best Lawyers"

08/28/2012

The firm receives top rankings for bet-the-company, intellectual property, criminal defense, securities, commercial, legal malpractice, and appellate litigation. Read more

Practical Tips to Help Newer Lawyers Act Ethically and Avoid Liability

07/09/2012

Dan Purcell will present before the Bar Association of San Francisco. Mr. Purcell represents companies and individuals accused of professional misconduct, fraud, or racketeering. Read more

Keker & Van Nest Wins Defense Verdict for Google in High-Stakes Battle with Oracle

05/23/2012

Keker & Van Nest bested Oracle's legal team, who were unable to secure any significant wins during the multiphase five-week trial. Read more

Keker & Van Nest Drastically Limits Damages in Copyright Phase of Oracle v. Google Smartphone War

05/07/2012

Partial verdict in Oracle-Google case seen as setback for Oracle. Read more

Dan Purcell and Eric MacMichael Named California Pro Bono Lawyers of the Year

02/18/2012

They dedicated five years to exonerate Caramad Conley, a man who was wrongfully convicted of a double homicide and spent 18 years in prison. Read more

Litigating A Trade Secret Case From Inception Through Trial

12/09/2011

Dan Purcell and other leading trade secret practitioners will present the defense and plaintiff perspectives in this advanced seminar. Read more

Keker and Van Nest LLP: Partner in Promoting Justice

12/01/2011

Northern California Innocence Project commends Keker & Van Nest's pro bono efforts. Read more

America's Dwindling Access to the Federal Courts

07/25/2011

Our current U.S. Supreme Court is deeply skeptical that federal courts should be places where individuals can go to have their rights vindicated, writes Dan Purcell. Read more

Why Lawyers Get Sued (and How to Stay Out of Trouble)

06/07/2011

Daniel Purcell presents the steps every lawyer can take to reduce the risk of malpractice liability. Read more

Dan Purcell Discusses How Compensation From Innocence Board is Rare

03/15/2011

Mr. Purcell recently won freedom for a man unconstitutionally convicted and wrongly imprisoned for 18 years. Read more

Keker & Van Nest Wins Freedom For Man Wrongfully Convicted for Murder

01/13/2011

Dan Purcell and his team greeted Caramad Conley as he took his first steps as a free man after serving 18 years for a double-murder conviction that a judge ruled had been obtained through perjured testimony. Read more

Summary Judgment Win Impacts Rules Governing Free Speech

01/13/2011

The San Francisco Chronicle featured Keker & Van Nest's victory on behalf of peace activists who wished to protest on the Golden Gate Bridge. Read more

Keker & Van Nest Safeguards Freedom of Speech

01/12/2011

Ajay Krishnan, Daniel Nazer and Daniel Purcell’s successful motion for summary judgment has changed the rules governing free speech on the Golden Gate Bridge Read more

Keker & Van Nest's Overturned Murder Conviction Makes Headlines

12/15/2010

Dan Purcell, Eric MacMichael, and Zachary Bookman proved Caramad Conley was unconstitutionally convicted and wrongly imprisoned for 18 years. Read more

After 13 Years, It's 'Beautiful' to be Free Again

09/03/2003

Keker & Van Nest reversed the murder conviction of a man who had been sent to prison as a teenager more than 13 years ago. Read more

  • "Advancing Equal Access to Justice," The University of California Hastings College of the Law and Stanford Center on the Legal Profession, 2015
  • "Critical Insurance Issues for your Next Mediation," Bar Association of San Francisco, 2015
  • "Doing the Right Thing:  Practical Tips to Help Newer Lawyers Act Ethically and Avoid Liability," Bar Association of San Francisco, 2012
  • "Litigating a Trade Secret Case from Inception Through Trial," Bridgeport CLE, 2011
  • "Why Lawyers Get Sued (and How to Stay Out of Trouble)," Bar Association of San Francisco, 2011
  • "Pro-Institution Movement: America's Dwindling Access to the Federal Courts," Daily Journal, 2011
  • “The Public Right to Precedent: A Theory and Rejection of Settlement Conditioned on Vacatur,” California Law Review, 1997