Stephen E. Zweig

Stephen E. Zweig

Experienced patent attorney
  • Patents, Trademarks, Intellectual Property
  • California, USPTO patent bar (Federal Jurisdiction)
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Experienced patent attorney with a strong technical background, over 250+ issued patents, and many trademarks.

In addition to my legal background, I have a Biophysics STEM background (PhD) and experience with medical devices, software, electronics, and biotech. I have a lot of experience with startups, due diligence, and litigation support.

Practice Areas
    Patent Prosecution
    Trademark Registration
    Intellectual Property
Video Conferencing
  • Skype
  • Zoom
  • Your choice
Jurisdictions Admitted to Practice
State Bar of California
ID Number: 283095
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USPTO patent bar (Federal Jurisdiction)
ID Number: 60144
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Professional Associations
American Bar Association  # 02064556
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Websites & Blogs
PatentAssociate IP Blog
Legal Answers
9 Questions Answered
Q. I have a display patent from 1993 I'd like to know if there's some way I can update it ?
A: Sadly no. Patents typically have a maximum lifetime of about 20 years from the filing date. Although this can be adjusted a bit for delays at the USPTO, usually, the adjustments are only for a few months or years. A 1993 patent era patent is likely long expired, is probably public domain. Although you can try to think up a new invention in the same area, keep in mind that the USPTO will use the original 1993 patent against your new idea.
Q. Can I file an RCE by a 3-month official due date after an AFCP2.0 is filed but before an AFCP2.0 decision is made?
A: Probably yes, but the USPTO will likely then consider your AFCP 2.0 request to be withdrawn and will instead most likely go with the RCE.
Q. Is there a way to use a patented product for my business without it being illegal?
A: It probably is a good idea to talk to a patent attorney. The claims may not be as comprehensive as you think. Alternatively, the patent prosecution history may show specific gaps in coverage. Other information, such as expiration dates, ownership, and the like, may also be helpful.
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Contact & Map
15466 Los Gatos Blvd., 109-355
Los Gatos, CA 95032
Telephone: (408) 348-1495
Monday: 8 AM - 5 PM
Tuesday: 8 AM - 5 PM
Wednesday: 8 AM - 5 PM
Thursday: 8 AM - 5 PM
Friday: 8 AM - 5 AM (Today)
Saturday: 8 AM - 5 PM
Sunday: 8 AM - 5 PM
Notice: Although I prefer to talk during weekday business hours, I am available for rush or emergency discussions during weekends and off-hours as well.
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