Serving Orange County
Orange County Patentability Opinion Letter Lawyer
Clear risk assessment, claim framing, and filing recommendations
Call now and schedule your free consultation for clear answers and trusted guidance; no pressure, just the clarity you need.

What Your Patentability Opinion Includes
Get a clear read on whether your invention is likely patentable before you invest in filings. We combine targeted prior art research with attorney analysis on novelty and non-obviousness, then translate findings into practical next steps for U.S. and international strategy.
Targeted Prior Art Search
We scope your claims, search relevant classes and keywords, review U.S. and international patents and literature, and document the closest art with citations and excerpts.
Novelty and Non-Obviousness Analysis
An attorney compares each claim element to the record, maps overlaps, identifies differentiators, and explains risk levels so you understand the strengths and gaps.
Actionable Filing Recommendations
Receive go/no-go guidance with claim-framing ideas, provisional vs non-provisional timing, PCT options, and documentation tips to strengthen a later examination record.

Before you spend on filings, get clarity—an honest patentability opinion saves time, money, and momentum.
What makes us different.
At Yang Law Offices, your patentability opinion is attorney-led, evidence-based, and written in plain English (or 中文). We don’t dump search results—we map the closest prior art to your claim elements, score novelty/non-obviousness risk, and show exactly how to reframe or narrow claims if needed. You get a go/no-go call, filing path (provisional, non-provisional, or PCT), and a checklist to strengthen the record before the USPTO. It’s practical, fast, and tailored to Orange County startups, labs, and founders.
Call Now, I’m ListeningFrequently asked questions
What is a patentability opinion—and how is it different from an FTO?
A patentability opinion evaluates novelty and non-obviousness over prior art under federal law. An FTO opinion asks whether commercialization would infringe existing patent claims. Both apply in California because patent law is federal. In California, your communications with a lawyer are protected by attorney-client privilege and work product.
Do I need a patentability opinion before filing?
Not required, but smart. An opinion helps with go/no-go, claim scope, and choosing provisional, non-provisional, or PCT. That guidance is federal. In California, we also advise on using NDAs and engagement terms to maintain privilege and protect disclosures during local fundraising or vendor talks.
What sources are reviewed for prior art?
U.S. and foreign patents and published applications, plus non-patent literature. All can be prior art under federal law, which applies in California. We tailor searches to your industry and include West Coast competitors and public disclosures that may surface here.
What do I actually receive?
A written letter with a search summary, claim-by-element comparisons, risk levels on novelty and non-obviousness, and filing recommendations. The legal standards are federal. In California, we deliver under attorney-client privilege and keep materials confidential.
What if the opinion is unfavorable?
You can iterate the design, reframe or narrow claims, pursue trade secret protection, or file narrowly while R&D continues. California recognizes trade secrets under the California Uniform Trade Secrets Act; using NDAs and access controls helps preserve trade secret status while you regroup.
testimonials
Words From Clients
Mrs. L
IP, business formation, and contracts
“ Met with Rob and Elizabeth to discuss IP and business formation. They were both very helpful and agreed to look at my contracts to provide guidance. Mrs. L
PowerX T.
Trademark filings and ongoing counsel
“ I have been using The Law offices of Elizabeth Yang for over 6 yrs. Regarding all my Trademark filings as well as other business & personal matters. They always provide great n informative services! PowerX T.
Ray J.
Business law seminars and questions
“ I met Elizabeth at the business association events and had attended a few of the zoom seminar that she hosted on business law. She is extremely knowledgeable and a great presenter, she made those business matters easier to understand. I had also reached out to her after the free seminars for questions, she replied even I was not yet a paid client. Their office staff are multi-lingual, Yang Law Office will be our first choice if we ever decided to proceed with the next BIG IDEA! Ray J.
Sophie H
Contract review for a business
“ Elizabeth and her team is amazing! They helped me review the contract agreement for my Nutrition and Fitness business . They have fast respond time, staff are very professional, definitely recommend Yang Law Office for any legal needs Sophie H
Brian W.
Legal work for a business sale
“ I was selling my business and used Elizabeth as my attorney to complete the transaction. Elizabeth was 100% professional and even answered texts on the weekend. I am not the easiest guy to do business with, as I expect people to go above and beyond like I feel I do myself. This attitude that I have is not always appreciated? Elizabeth not only put up with my attitude, she was extremely pleasant to work with. Brian W.
Mayra Carrillo
Help starting a business
“ I am very pleased with Elizabeth Yang… I needed help in regards to my business. I didn’t have a clue of what to do or where to start. Elizabeth explained to me very clearly and she has great customer service skills. She resolved all of the issues I had to start up my own business… Mayra Carrillo Owner, Party for Less
Still not convinced?
Still not convinced? Many teams file first and ask questions later—then burn time and budget. A patentability opinion flips that: clear, attorney-led answers on novelty and non-obviousness before you spend. With real prior art, plain-English risk levels, and next-step filing options, you protect runway, avoid dead ends, and move faster with confidence.
Contact Us
Call Now: (877) 492-6452 or send an inquiry.
Our locations.
Yang Law Offices lists these four Southern California locations.
Monterey Park, CA 91754
Open Monterey Park in Google Maps 555 S Flower St., 51st Floor
Los Angeles, CA 90071
Open Los Angeles in Google Maps La Palma Center 2187, 6 Centerpointe Drive Suit 700
La Palma, CA 90623
Open La Palma in Google Maps 388 Cordova St., Unit 100C
Pasadena, CA 91101
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