I Have an Invention Idea — Where Do I Start?

By Mike Moussa, PE — mechanical engineer and founder of PartSnap. This is the advice I give every first-time inventor who calls our shop.

First: Take a Breath

Having an invention idea is exciting. But the worst thing you can do right now is rush to spend money. Before you call a patent attorney, before you hire a design firm, before you buy a 3D printer — take a breath and do some homework. It’s free and it could save you thousands.

Step 1: Search for Existing Solutions

Before anything else, find out if your idea already exists. This isn’t discouraging — it’s smart business.

Google it. Search for the problem your invention solves. You might find existing products, or you might confirm there’s nothing out there.
Search Amazon. If someone’s already selling a similar product, study it. Can yours be better? Different? Cheaper?
Search Google Patents. Free patent searching. Look for prior art. A patent doesn’t mean a product is on the market — but it does mean someone else had the idea.
Check Kickstarter and Indiegogo. Many inventions launch here first.

If you find something similar: That’s actually not bad news. It means there’s a market. Your job is to make yours better, cheaper, or different enough to stand out.

If you find nothing: That could mean you’ve got something unique — or that there’s no market for it. Keep going to find out.

Step 2: Sketch It Out

You don’t need CAD software. You don’t need to be an artist. Grab a piece of paper and draw your invention from multiple angles. Include:

Overall shape and size (write down approximate dimensions)
Moving parts — what moves, rotates, slides, or clicks?
Materials — what should each part be made of? Plastic? Metal? Rubber?
How the user interacts with it — buttons, handles, grips, screens?

This sketch doesn’t need to be perfect. It needs to communicate your idea to an engineer. We work from napkin sketches all the time.

Step 3: Build a Quick-and-Dirty Proof of Concept

Can you test your core idea with materials from the hardware store? Cardboard, hot glue, PVC pipe, duct tape — whatever it takes to answer the question: “Does this basic concept work?”

This step is worth its weight in gold. Many inventions have a fatal flaw that only becomes obvious when you build a physical version. Finding that flaw now costs $10 in materials instead of $3,000 in prototyping fees later.

Step 4: Get an Engineering Opinion

Now take your sketch and your proof of concept to a real engineer or prototype shop. Not an “invention help” company — an actual engineering firm that builds things.

A good engineer will tell you:

Is this manufacturable?
What manufacturing process makes sense?
What materials should you use?
What will a professional prototype cost?
Are there design improvements that would make it cheaper/better/easier to make?

This conversation should be free or very cheap. Any company that charges $500+ just to look at your idea and give you feedback is not acting in your interest.

Step 5: Prototype Before You Patent

This is controversial advice, but I stand by it: build a working prototype before you file a patent.

Why?

A patent costs $5,000–$15,000. A proof-of-concept prototype might cost $500.
Building the prototype will change your design. You’ll discover improvements, problems, and better solutions. Your patent should cover the FINAL design, not your first sketch.
A provisional patent application ($75–$300) can protect your idea for 12 months while you prototype. That’s enough time to build and test without risking your IP.

Step 6: Test with Real Users

Show your prototype to people who would actually buy it. Not your friends and family (they’ll be nice). Show it to strangers who have the problem your invention solves.

Ask them:

Would you use this?
What would you pay for it?
What’s missing?
What would you change?

Step 7: Decide Your Path

At this point you have a working prototype and user feedback. Now you have three options:

License it — sell or license the design to an existing company. Lower risk, lower reward.
Manufacture and sell it yourself — higher risk, higher reward. Need manufacturing partners, a sales channel, and capital.
Crowdfund it — Kickstarter or Indiegogo can validate demand AND fund your first production run.

We Help at Every Stage

PartSnap works with first-time inventors and experienced product developers alike. Whether you have a napkin sketch or a finished CAD model, we can help you get to the next step — without the sales pitch.

📧 info@partsnap.com | 📞 (214) 449-1455 | Free Consultation