Stephen E. Zweig

Stephen E. Zweig

Experienced patent attorney
  • Patents, Trademarks, Intellectual Property
  • California, USPTO patent bar (Federal Jurisdiction)
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Biography

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.

Professional Associations
American Bar Association  # 02064556
Member
Current
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Jurisdictions Admitted to Practice
California
State Bar of California
ID Number: 283095
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USPTO patent bar (Federal Jurisdiction)
ID Number: 60144
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Practice Areas
    Patents
    Patent Prosecution
    Trademarks
    Trademark Registration
    Intellectual Property
Legal Answers
Q. Hi, I have an idea for patenting, similar to #5857273. I am wondering how to pull up the drawings for it? And if expired
A: One easy way is to look up the patent at https://patents.google.com/ . Then, for a US patent, put a US in front of the number such as US5857273. Google will fetch the patent and also let you know if it is expired or not (it is). To get your own patent in the same topic, you will have to make some improvements that the examiner considers to be both novel (not been done before) and not obvious. Not obvious means not trivial. Something that would not be apparent to someone of average skill in that area.
Q. a patent question
A: Unfortunately, most likely not. Your partner had two options to get a US patent. Either apply directly for a US patent within a year of filing for the Chinese patent, or alternatively file for an international (PCT) patent application, and then apply for a US patent application within 30 months of filing for the PCT application. If, as you say, the Chinese patent issued four years ago, then both time windows have likely passed.
Q. I sell a product that I DIY, meaning the product existed already and was popular and more known in the 80s-90s.
A: I am not sure if this applies to your situation or not. However many products from the 80's and 90's, unless covered by trademarks (such as the product's name or logo) or copyrights (for example, graphics), are now "public domain." In such cases, anyone might be able to make and sell the product. The answer will vary greatly depending on the specifics of your situation, however.
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Websites & Blogs
Website
PatentAssociate.com
Blog
PatentAssociate IP Blog
Contact & Map
Patentassociate.com
15466 Los Gatos Blvd., 109-355
Los Gatos, CA 95032
Telephone: (408) 348-1495
Monday: 8 AM - 5 PM
Tuesday: 8 AM - 5 PM (Today)
Wednesday: 8 AM - 5 PM
Thursday: 8 AM - 5 PM
Friday: 8 AM - 5 AM
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.