United States - California Blakely Sokoloff Taylor & Zafman LLP

Established in 1975, Blakely Sokoloff Taylor & Zafman (BSTZ) is a medium-sized IP firm that focuses on excellent work product and strong client relationships. With six offices and more than 50 attorneys and agents who have degrees in technology, engineering and science-related fields, the firm is widely acknowledged as a globally respected IP law firm.

BSTZ works with clients to protect inventions, designs, trade secrets, trademarks, service marks, software and original works of authorship. Our attorneys bring a broad spectrum of technical knowledge, allowing us to handle difficult and complex IP matters. We are uniquely situated to understand, protect and enforce all varieties of IP right.

Our practice areas include prosecution of patents, trademarks and copyright; licensing; litigation; opinion work; post-grant proceedings; unfair competition; rights of privacy; and customs matters.

The firm is ranked by the Daily Journal as one of the top boutique law firms in California and by Intellectual Property Today as one of the Top 20 Patent Firms in the United States. In previous years, the firm has also received recognition as a go-to law firm for patent prosecution by American Lawyer Media and was included in Corporate Counsel’s Who Represents America’s Biggest Companies list in the area of patent prosecution.

BSTZ represents many of the top-100 technology companies in the United States and internationally. Our diverse client base includes public and private companies – from innovative start-ups and progressive small and medium-sized businesses to Fortune 500 companies.


Our firm has a premier reputation and well-established practice in all areas of patent law, including the preparation and prosecution of applications for patents, post-issuance proceedings, patent licensing and patent infringement litigation at both the trial court and appellate levels.

Our patent practice group is made up of experienced and dedicated attorneys and patent agents who are exceptional communicators with an in-depth understanding of US and international patent office procedures. We have extraordinary depth and expertise in a broad range of technologies. Most of our patent attorneys and patent agents have engineering or science degrees and many have real-world experience in the engineering and computer science fields.

Our areas of patent expertise include:

  • drafting and filing of US and international patent applications;
  • office actions;
  • filing for reissue;
  • ex parte re-examinations;
  • appeals to the Patent Trial and Appeal Board;
  • post-grant reviews;
  • covered business method reviews; and
  • inter partes reviews.


We understand the value of company brands and the effort it takes to protect them. The attorneys in our trademark practice group have a wealth of knowledge and experience in counselling clients in all aspects of domestic and international trademark law. Most of our trademark attorneys worked as trademark examining attorneys at the US Patent and Trademark Office before joining the firm.

Our areas of trademark expertise include:

  • registration and portfolio management;
  • clearance;
  • branding advice and strategy;
  • enforcement;
  • agreements and due diligence; and
  • international trademark protection.


The firm has played a successful and active role in enforcing and defending clients’ IP rights since it was founded in 1975. Our diverse litigation practice covers subject matter including video editing equipment, tissue engineering, medical devices and water ejection devices, to name a few. Our staff includes veteran litigators experienced in the prosecution and defence of cases involving a wide variety of IP issues.

Our areas of litigation expertise include:

  • patent infringement, including inter partes review;
  • trademark infringement;
  • diverted goods;
  • trade secrets;
  • copyright infringement;
  • trade libel; and
  • unfair competition.

Post-grant proceedings

Our attorneys are well positioned to handle the full range of post-grant proceedings under the America Invents Act. We have attorneys versed in technology, prosecution and litigation, which are the right skillsets to bring to these complex proceedings.

Main address

1279 Oakmead Parkway
Sunnyvale CA 94085
United States

Contact details

E: kevin_paul@bstz.com
T: +1 408 720 8300
F: +1 408 720 8383
W: www.bstz.com

Professional contacts

Kevin Paul, Executive director
E: kevin_paul@bstz.com

Vanessa Yaptangco, Business development and marketing specialist
E: vanessa_yaptangco@bstz.com

Other offices

California, Colorado, Oregon, Washington

Sample client list

  • Abbott
  • Alien Tech
  • Applied Materials
  • EMC
  • Intel
  • NextNav
  • Omni Vision
  • Qualcomm
  • Salesforce
  • SunPower

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Issue 82