How to Patent a Product (from a Patent Attorney’s Perspective)

Patenting a product is one of the most important steps you can take to protect your intellectual property and build long-term value around your invention. As a patent attorney, I’ve worked with everyone from garage inventors to established startups, and I’ve seen how getting a patent can make or break a business. I’ve also seen the costly messes that come from skipping steps or filing a provisional or regular patent application hastily without understanding the process.

Let’s clear up a common myth right out of the gate: mailing your idea to yourself, signing an NDA, or describing your product in a blog post does not protect your patent rights. A patent is the only formal legal protection that prevents others from making, using, or selling your invention without your permission.

In this guide, I’ll walk you through the full process of patenting a product—from determining if your idea qualifies to filing and responding to the USPTO. I’ll also highlight the decisions that really matter, based on years of real-world experience. The goal isn’t just to get you a patent—it’s to help you get a strong one that’s worth the time and money you invest.

Step 1: Determine if Your Product Is Patentable

Before you dive into paperwork, it’s essential to answer one key question: is your product actually patentable? Not everything qualifies for a patent, and filing prematurely can waste time and money.

What Makes Something Patentable?

To be eligible for a patent, your product must be:

• Novel – It must be new. If someone else already invented it or something very similar exists, you may be out of luck.
• Useful – It must serve a clear, practical purpose.
• Non-obvious – It can’t be an obvious variation of something that already exists.

These criteria are judged from the perspective of someone “skilled in the art”—in other words, a professional in the relevant field. This is one area where inventors often misjudge their invention’s uniqueness. Just because you or your friends haven’t seen anything like it in the marketplace doesn’t mean it’s new in the eyes of the U.S. Patent and Trademark Office.

Understand the Types of Patents

There are three main types:

• Utility patents – Cover how an invention works or is used. These are the most common and most valuable but expensive and complicated to obtain, and very expensive to enforce.
• Design patents – Cover how something looks (its ornamental design).  More than half are approved as filed, which is very different from the resistance that utility patent applications see at the U.S. Patent and Trademark Office.
• Plant patents – Rare, and specific to new plant varieties.

Most physical products fall under utility patents.  Digital products can potentially be protected by utility patents (but see my blog on the History of Software Patents), design patents, copyright, and trademark  If you’re trying to protect the function of your invention, utility patents are what you probably want to pursue, if you have the hefty budget required. If you only care about how it looks, or have a limited budget, a design patent and/or copyright registration might be sufficient—but they are far more limited in the protection they provide.

Start with a Preliminary Search

Even before you hire a professional, you should do some homework. A basic patent search through the USPTO Patent Public Search tool or Google Patents can give you a sense of whether your invention already exists. Search by keywords, components, and variations on your idea. I have prepared instructions on how to perform a search at the U.S. Patent and Trademark Office.  Look beyond the U.S.—the same invention might have been published in another country.  Notice the word “published.”  A common misconception is that an invention must be patented by someone else to prevent you from being able to obtain your own patent.  This is not correct.  If the invention is published by anyone else, anywhere around the world, in any language, this is one of the things that will prevent you from being able to obtain a patent in the U.S.

Keep in mind, therefore, that a patent search is the tip of the iceberg.  It is cost prohibitive to search every patent office and every technical publication and book around the world, so you can never completely rely on a patentability search as being conclusive. But doing some early research helps you speak the language and better understand where your invention stands, and what features are probably not novel.

A Prototype Isn’t Required

Technically, you don’t need a working prototype to file a patent. What you do need is a complete and detailed description of how your invention works. If you can’t clearly explain it in words and drawings, you’re not ready to file.

In practice, many inventors do build prototypes—not just for testing and validation, but to better understand what they’re trying to protect. Sometimes the process of building reveals previously unrecognized elements worth patenting, and provides an indication of the likely cost of manufacturing.  If the next best alternative is substantially less expensive, the novel features of your invention may not be enough to allow you to capture market share.

Step 2: Choose the Right Patent Strategy

Once you’re confident your invention is patentable, the next step is choosing how to file. This isn’t a one-size-fits-all decision, and the strategy you choose can impact everything from costs to long-term enforceability.

Provisional vs. Non-Provisional Patents

There are two main ways to begin the patent process:

• Provisional application – This is a lower-cost, informal filing that gives you a 12-month window to file a full (non-provisional) application. It’s not examined by the USPTO and won’t result in a patent by itself.
• Non-provisional application – This is the full, formal patent application. It gets examined by a USPTO patent examiner and, if approved, results in a granted patent.

So, why start with a provisional? Simple: speed and affordability. A provisional application lets you establish an early filing date (called a priority date) while you refine your invention, secure funding, or test the market. It also allows you to use the term “patent pending.”

But here’s the catch: a poorly written provisional can come back to haunt you. If you fail to describe your invention thoroughly or don’t include the right features, you may lose your early priority claim when it’s time to file the full application. I’ve seen this happen to DIY filers more than once.  I’d hazard a guess that the majority of provisional patent applications are severely flawed in one aspect or another.

International Protection: Do You Need It?

If you plan to sell your product outside the U.S., you’ll need to think globally. The Patent Cooperation Treaty (PCT) allows you to file one international application that reserves your rights in over 150 countries. It doesn’t give you an international patent—but it buys you time (up to 30 months from your initial filing) to file in specific countries.

This is a major strategic decision. Filing internationally is expensive, so unless you have a clear plan to enter global markets, it may not be necessary right away. But if your invention has global potential, get advice early and budget accordingly. Filing a PCT just delays the decisions of where to file.  If you already know where you are going to sell your product, filing directly in those countries may be substantially less expensive than filing a PCT application first.

Attorney vs. DIY Filing

Yes, you can file a patent on your own. The USPTO even provides resources for inventors who want to go solo. But be cautious.  You can also treat your own illnesses without a doctor.  But there may be a substantial difference in skill levels.

Patent law is complex and technical. A well-written patent isn’t just about describing your invention—it’s about strategically claiming it in a way that’s broad enough to protect against workarounds but narrow enough to withstand scrutiny. This is where a skilled attorney makes a massive difference. The courts have a way of using minor errors in patent applications to find patents to be too narrow to be enforced against infringers.  Does your title mention a specific component or result?  That narrowness could be read into your patent claims.  Does your Background section discuss how your invention solves a certain problem by using certain components?  Everything in the background section is admitted prior art and you may have just invalidated your patent. Errors in the patent application or provisional application usually cannot be fixed later, particularly if you need the filing date of the application and have started advertising and selling.

The claims section of your patent is your legal weapon. Get it wrong, and you may wind up with a patent that’s either unenforceable or too narrow to matter. The upfront investment in a good patent attorney can save you far more in the long run—especially when it comes to licensing, fundraising, or defending your rights.

Step 3: Prepare and File Your Application

At this stage, you’ve confirmed your product is potentially patentable (never guaranteed, of course) and decided on the right filing strategy. Now comes the heavy lifting: preparing a strong application. This is the part that separates a flimsy filing from a solid patent—one that can stand up to scrutiny and actually protect your invention in the real world.

What Goes into a Patent Application?

Whether you’re filing a provisional or non-provisional application, you’ll need to include several critical elements. A complete non-provisional utility patent typically contains:

• Title and Abstract – Not as simple as you would think.  Both the title and abstract should be at least as broad as the broadest claim.  If you don’t know how to draft a claim, you would probably make a mistake in how you draft the Title and Abstract.
• Background – A description of the current state of the art, the problems that exist, and how your invention addresses them.  This section is optional and those unfamiliar with the risks would be better off omitting it.
• Summary – A high-level explanation of the invention.  Again, it should be at least as broad as your broadest claims.  Some patent attorneys prefer to copy the broadest claims into the Summary.
• Detailed Description – A comprehensive explanation of how your invention works, including technical specifications, components, and potential variations.  The Detailed Description refers to components shown in the drawings by reference numerals.
• Drawings – Visuals that support and clarify your description (not just artistic renderings—these must meet strict formatting standards).
• Claims – The heart of the patent. This section defines exactly what you are claiming legal rights to. The wording here determines what your patent protects—and what it doesn’t.

The claims are arguably the most important (and most technical) part of the entire application. Think of them as the fence around your invention: too small, and people can design around it; too broad, and the USPTO will reject them. Crafting strong claims is both a legal and strategic exercise—and where most self-filers go wrong. It is typical to have a range of claims, both broad and narrow. Methods and apparatus.

Avoid Common Drafting Mistakes

Inexperienced inventors often make the same handful of errors when drafting applications:

1. Being too vague – You must describe your invention in enough detail that someone skilled in the field could reproduce it. Generalities or buzzwords will get you nowhere.
2. Overreaching claims – Trying to claim more than your invention actually does will trigger a rejection. The USPTO will push back hard on anything that seems too ambitious or undefined.  In fact, they typically reject initial filings as a matter of course.  In a negotiation session, they reject and you have to argue why your claims distinguish over the prior art.
3. Omitting key variations – If you only describe one version of your invention and someone makes a small change, they might avoid infringing. Covering alternative embodiments helps lock down your protection.
4. Poor drawings or formatting – USPTO rules for drawings are very specific. Stick figures or Photoshop mockups aren’t enough.

A well-prepared application anticipates objections. It explains why the invention matters, what it improves upon, and how it’s different from what came before. It’s not about fluff—it’s about clarity and completeness.

How to File with the USPTO

Once your application is ready, you’ll file it at the U.S. Patent and Trademark Office.  Applications are typically filed by registered patent attorneys using their patent office credentials via an online portal.

Government filing fees can be found on the U.S. Patent and Trademark Office website and typically increase each year. There are fees for filing, fees for examination, fees for excess claims, and fees for large numbers of pages.  After a patent is issued, there will be periodic maintenance fees to keep the patent alive.

If you’re filing a provisional patent, the process is a bit simpler. You’ll still need a detailed description and drawings, but you won’t need formal claims. However, don’t treat a provisional like a casual placeholder. It must still be thorough enough to support your later non-provisional filing—if it isn’t, you may lose your priority date.

Understanding “Patent Pending”

Once you file, you can start using the term “patent pending” in connection with your product. This is not a guarantee of approval—but it does put others on notice that you’ve taken legal steps to protect your idea.

Patent pending status is valuable. It shows potential partners and investors that you’re serious. It also discourages copycats, especially those who want to avoid costly legal disputes. Just be aware that this period can last quite a while—sometimes years—before a patent is actually granted.

What Happens After You File

After filing, your application will enter the examination phase, which involves a patent examiner at the USPTO reviewing your submission. This isn’t a rubber-stamp process. Most patent applications go through at least one round of rejection before they’re accepted—some go through several.

You’ll receive something called an Office Action, which outlines the examiner’s objections or rejections and gives you a chance to respond. This is normal. It doesn’t mean your patent is dead—it just means you need to adjust, clarify, or defend your claims.

We’ll cover how to handle Office Actions, amend claims, and work with examiners in the next section. For now, know this: filing is not the finish line. It’s the halfway point.

Step 4: Respond to the USPTO and Navigate the Review Process

Once your application is filed, the waiting begins. Depending on the technology area and USPTO backlog, it may take 12 to 24 months (sometimes longer) before your application is reviewed by a patent examiner. But once it is, things can move quickly—and you’ll need to be ready.

Understanding Office Actions

An Office Action is an official communication from the USPTO detailing issues with your application. These often include:

• Prior art rejections – The examiner believes your invention is already covered by an existing patent or published application.
• Objections to form or clarity – Your drawings, description, or claims don’t meet the USPTO’s formatting or language standards.
• Rejections based on obviousness – The examiner thinks your invention is a simple variation of what already exists.

Receiving an Office Action is completely normal. In fact, the majority of applications are initially rejected. This isn’t failure—it’s an opportunity to clarify, amend, and make your case.

How to Respond Effectively

You usually have three months to respond (with an optional extension for a fee). Here’s what happens next:

1. Review the examiner’s reasoning – Understand which references they’re citing and why they believe your invention is not novel or non-obvious.
2. Amend your claims (if needed) – You may narrow or revise your claims to better distinguish your invention from prior art.
3. Write a legal argument – This is where your patent attorney earns their keep. You’ll argue, point by point, why your invention is new, useful, and non-obvious despite the examiner’s findings.

This process can take multiple rounds. In some cases, it’s strategic to request an interview with the examiner, which allows your attorney to explain the invention and resolve misunderstandings more efficiently.

If all goes well and the examiner is satisfied with your amendments and arguments, you’ll receive a Notice of Allowance—meaning your patent is approved and will be granted once the issue fee is paid.

If you hit a wall with the examiner, you have the option to appeal to the Patent Trial and Appeal Board (PTAB), though this can be time-consuming and expensive. In borderline cases, it’s often more practical to revise the application or file a continuation with new claims.

Step 5: After Your Patent Is Granted

Receiving a granted patent is a milestone—and a big one. But it’s not the end of the road. There are several things you need to do to maintain and protect your rights going forward.

Enforce Your Patent Rights

The USPTO grants patents—it doesn’t enforce them. If someone starts copying your product or using your patented process without permission, it’s up to you to take action.

The first step is often a cease and desist letter, which may lead to negotiation or a licensing deal. In more serious cases, you may need to file a patent infringement lawsuit in federal court.

Having a patent gives you leverage—but only if you’re willing to enforce it. This is another area where having a strong, well-drafted patent pays off. Weak claims make enforcement difficult; strong claims make it far more likely that competitors will settle or back off.  The typical utility patent trial costs several million dollars.  For this reason, they are not always a useful tool for very small businesses.

Consider Licensing or Selling Your Patent

You don’t have to manufacture or market the product yourself. In fact, many inventors make their money by licensing their patents to companies that can bring the product to market.

Licensing can provide ongoing royalty income while someone else handles production, distribution, and sales. Alternatively, you can sell the patent outright to an interested party or investor.

The stronger your patent portfolio, the better your negotiating position. Investors and licensees are far more interested in patents that are clearly written, thoroughly examined, and difficult to design around.  Some inventors have the misconception that businesses will be beating down their door to buy or license patents.  This is rarely the case these days.  The value of patents has declined recently and to have value, it is more important than ever to have a portfolio of multiple patents.  This requires a substantial budget.

Pay Maintenance Fees

For utility patents, you’ll need to pay maintenance fees at 3.5, 7.5, and 11.5 years after the patent is granted to keep it in force. These aren’t optional—and missing a deadline can result in losing your rights permanently.

Design patents don’t require maintenance fees, but utility patents do. The costs increase at each stage, so plan ahead and budget accordingly. If your patent is generating revenue, treat these fees as a routine business expense.

Final Thoughts from a Patent Attorney

Patenting a product is a serious undertaking. It requires strategic thinking, clear communication, legal precision, and a willingness to invest both time and money. But if you believe in your invention—and have a solid business case—it’s one of the best ways to protect your work and turn your ideas into real-world value.

Here’s what I always tell clients:

• Don’t rush. Filing too early with a weak or incomplete application can hurt you more than waiting a few months to get it right.
• Do your homework. Learn the basics of patent law so you can ask smart questions and make informed decisions.
• Hire help when it matters. If you’re serious about protecting your product, get professional assistance—especially when it comes to writing claims and responding to Office Actions.
• Think beyond the patent. Getting one is important, but it’s what you do with it—licensing, marketing, enforcing—that determines its real-world impact.

Whether you’re a startup founder, or a product developer at an established company, understanding the patent process gives you an edge. And while it may feel complex at first, with the right guidance, it’s absolutely navigable.

If you’re thinking about patenting your product, take the next step with intention. Don’t just chase a patent—build a patent portfolio that will protect and empower what you’ve worked so hard to create, if you have the budget for it.