⑧お客様の不安解消
2026年08月09日
アイデアをネットに書いたら特許が取れなくなる？【リライト版】
公知の発明、新規性を失った発明と言われます。
発明者本人が、自分の発明を自ら公知にした場合です。
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【ＰＲ】個人様・社長様に特化＆元特許審査官が運営する特許事務所！
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東雲特許事務所（しののめ特許事務所）
弁理士 田村誠治（元特許庁審査官）
【東京都港区新橋】【東京都中央区八丁堀】【東京都北区田端】
【稀有な経歴】特許技術者→特許庁審査官→特許事務所運営
【楽しいホームページ】
個人発明家・小規模事業者専門の東雲（しののめ）特許事務所
https://www.patande.com/
【特許ドットコム】
個人・小規模事業者のための特許出願
https://tokkkyo.com/
【実案ドットコム】
個人・小規模事業専門＆元特許審査官による実用新案申請代理
https://www.jitsuan.com/
【商標ドットコム】
信頼・明確・安心の商標登録申請代理＜商標ドットコム＞
https://www.shohyou.com/
【ここだけの情報満載のブログ】
個人発明家向け特許・発明教室～目指せ一攫千金！～
https://www.tokkyoblog.com/
【本音モードのブログ】
弁理士のプライベートブログ～弁理士の視点＆審査官の視点～
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【note】
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https://note.com/tokkyoblog
https://youtu.be/sJgjSOk72i4
音は出ませんのでぜひご覧ください
＜機械翻訳＞
Will posting your idea online prevent you from getting a patent? [Revised Edition]
I received the following question:
"If I post my idea online, will I be unable to obtain a patent for it?"
Here is the answer to that question.
■ On Invention Novelty and the Exception to Loss of Novelty
Once an invention becomes known to the public, no one can obtain a patent for it.
Such inventions are referred to as "publicly known" or having "lost novelty."
An invention that has become public knowledge is considered the shared property of everyone.
It is deemed inappropriate to grant exclusive patent rights to any single individual.
However, there is a specific exception:
This applies when the inventor themselves makes their own invention public.
It is possible to obtain a patent within a certain period following the date of disclosure.
This is known as the "exception to loss of novelty."
■ Will posting your idea online prevent you from getting a patent?
If you post the details of your invention online, the following situation arises:
✓ The invention becomes publicly known, making it ineligible for a patent.
✓ As an exception, the inventor themselves may still be able to obtain a patent.
At first glance, this might seem like a good deal, right?
However, no expert (such as a patent attorney) would recommend publicly disclosing your invention.
■ Exceptions Are Just That—Exceptions
The exception to loss of novelty is strictly an exception.
Publicly disclosing an invention increases the risk that you will be unable to obtain a patent.
Since the details of this risk are technical, let me provide a simple example:
✓ Someone else might disclose the invention elsewhere.
✓ Someone else might file for or obtain a patent for that invention.
In scenarios like these, the true inventor may lose the chance to obtain a patent.
This is because it is practically difficult to prove that someone else stole the invention.
■ Aim for a Patent Without Disclosing Your Invention!
To summarize this article:
✓ If you want to obtain a patent, do not disclose your invention publicly!
If you have already disclosed your invention, do not panic—consult a patent attorney.
