The best mode requirement in patent law ensures that inventors disclose the most effective way of practicing their invention. You have to give away the secret-sauce even though you may want to keep it a secret. However, there is a way to make it harder for others to find your best mode so that you can satisfy the legal requirement while keeping competitors guessing about the true “secret sauce” of your invention. Here’s how to strike that balance.
What Is the Best Mode Requirement?
When filing a patent application, you must disclose the best mode—the preferred way of implementing your invention as you know it at the time of filing. However:
- You Don’t Have to Identify the Best Mode: While the best mode must be included in the application, you are not required to highlight or identify it. For example, if you tried 20 different variations, you can list all 20 variations without telling the reader which one is preferred.
- Future Updates Are Unnecessary: If you develop a better way to practice the invention after filing, there is no obligation to update the application unless you want to get patent protection for the best mode.
The Practical Strategy: Bury the Best Mode in Plain Sight
The best way to meet the best mode requirement without giving away your competitive advantage is to include the preferred embodiment as part of a broader disclosure. Here’s how:
1. Avoid Explicitly Identifying the Best Mode
Never use phrases like:
- “The preferred embodiment is…”
- “The best material is…”
- “The optimal configuration involves…”
Instead, describe the best mode neutrally as one option among many. For example, if your invention works best with a specific alloy, you could write:
- “Suitable materials include steel, aluminum, titanium, or other metals with comparable properties.”
This fulfills your obligation to disclose the best mode without pointing it out to competitors.
2. List Multiple Viable Options
Include the best mode in a list of reasonable alternatives. For example:
- If your invention requires heating a material to an exact temperature, describe a range:
- “The material may be heated between 200°C and 400°C depending on the desired application.”
- If a specific chemical produces the best results, include it with other options:
- “The process may use ethyl acetate, acetone, or other organic solvents.”
By providing a range or list, you obscure the best mode, making it harder for competitors to pinpoint your “secret sauce.”
3. Use Broad Descriptions
Frame the disclosure to include general principles or categories rather than overly specific details. For instance:
- “The device may operate using various energy sources, including solar, wind, or battery power,” even if solar is the best mode. This broader disclosure maintains flexibility and prevents undue focus on the preferred method.
Why Hiding the Best Mode Matters?
Although disclosing the best mode is legally required, you don’t have to make it obvious. This strategy:
- Complies with Patent Law: The best mode is disclosed, fulfilling your obligation.
- Keeps Competitors Guessing: By burying the best mode in a list of alternatives, competitors won’t easily identify the key advantage of your invention.
- Preserves Enforceability: Even if the best mode isn’t obvious, as long as it’s disclosed, your patent remains enforceable under the current law.
Balancing Patents and Trade Secrets
It’s important to remember that failing to disclose the best mode effectively treats it as a trade secret. Under patent law, you must choose:
- Patent Protection: Full disclosure, including the best mode, in exchange for exclusivity; or
- Trade Secret Protection: No disclosure, relying on secrecy for competitive advantage.
You can’t have it both ways. Trying to withhold the best mode while seeking patent protection undermines the principles of patent law and could result in legal consequences.
Conclusion: How to Satisfy the Best Mode Requirement
The best mode requirement is a balancing act. To satisfy the law while maintaining a competitive edge:
- Disclose the Best Mode: Include it in the application without explicitly labeling it.
- Provide Alternatives: Bury the best mode in a range of options or categories.
- Avoid Specificity: Use broad language to describe the invention.
This approach ensures that your patent meets legal standards while making it difficult for competitors to reverse-engineer the core of your invention. For assistance in drafting a patent application that strategically satisfies the best mode requirement, feel free to contact me at (949) 433-0900.