Daniel Bernoulli and his eldest son, Christopher, were in the room examining patent application documents together.

"There should be no problem. Let's go to the patent office tomorrow and get the patent that should belong to us. The principles discovered by my uncle can not only guide the research on ship navigation, but can also guide the research on flight and gases."

"Yes, Father, even if there are some things that are not very standardized, as long as our flying machine really flies, the reviewers will not make things difficult, and will even help us modify it to the real specifications."

"After our patent is approved, they will no longer have to face the headache of flying machine patent applicants."

"Haha, yes..."

The father and son laughed happily, and then Daniel's second son, Johannes, ran into the room panting:

"Dad, brother, it's not good, there is a flying machine in the sky!"

The two men couldn't hold it any longer and stood up immediately:

"What plane did you say?"

"Whose plane is it?"

Johannes called his father and brother and ran out of the house, came to the yard and looked up at the sky:

"Look..."

A simple airplane with a seal-letter logo on its wings has arrived above the yard where the Bernoulli family temporarily lives in Paris.

"Oh my god! It flies so smoothly!"

"Whose design is this? Has anyone applied for a patent?"

"Is this person crazy? What are they doing? Don't they want patents?"

“What do the emblems on the plane mean?”

Daniel Bernoulli and his son were shocked, and they could no longer calm down.

I had just prepared everything and was about to formally apply for a patent, but someone else had already made the aircraft public.

Patent laws generally stipulate that things that have been publicly used cannot be patented.

Because it has lost its novelty, the key is that it is impossible to determine who originally created it.

Johannes, who had been running for a while, gasped and said:

"I heard that it is the emblem of the Ming Dynasty royal family. The buttons of the authentic Ming-style formal clothes have that emblem.

“I also heard people say that it flew up from the city hall.

"There are police controlling the road in front of the city hall, which means that someone wants to apply for a patent for a flying machine and display it directly there."

Daniel and Christopher were both shocked:

"Flying from the city hall! That's several kilometers away!"

"How is this possible! How can it continue to fly for such a long time!"

Johannes was a little discouraged. He pointed at the plane in the sky and said:

"See for yourselves, it flies like this, so steadily, and continuously. Let alone the city hall, I feel that it will be no problem if it flies to the Palace of Versailles and back..."

Daniel also recovered more sense from the shock and looked up at the sky again, looking at the plane.

Then he let out an admiring and tangled sigh:

"This... this is really too stable... this doesn't look like a thrilling flight experiment at all..."

Christopher followed suit:

"It's like driving on the road or driving a boat on the water..."

Johannes said with some despair:

"Then what should we do? Should we still apply for a patent?"

Daniel was silent for three seconds, and then said decisively:

"Go, go right away, we want to prove that we independently produced the flying machine before they showed it to the public.

"Even if we can't win the patent for ordinary aircraft, we should still have the right to independently use flying machines for free."

This is also a general patent law principle.

Although patents are different from copyrights, patent ownership does not depend on the absolute date of invention, but rather on the date of application.

But if a person can prove that he independently invented a patent before it was approved.

Although he will not obtain ownership of the patent, he will also be able to obtain the right to use the patent for free.

Although he cannot license it to others, he can use it for free.

It’s just that this proof is very difficult. It’s hard to prove that you didn’t make it based on someone else’s published patent, and it’s even harder to prove that you didn’t make targeted modifications after seeing someone else’s patent to achieve success.

It is because of the difficulty of proving that patent authorization is based on the time of application and registration.

Daniel Bernoulli immediately started packing his things and went straight to the city hall with the documents.

At the same time, Guan Zhengping's test aircraft circled over Paris and returned to the Plaza de la Ville Hall.

But it didn't land immediately, instead it hovered in the sky.

Hubert, Director of the Paris Patent Office, and staff from the City Hall have completed the review of all documents.

It fully complies with the specifications. The key is to have the certification documents issued by the Ministry of Industry of Ming Dynasty and a copy of the patent certificate.

Physical review is no longer important. The usual physical review is always stumbling and there are various problems.

There is no need to look this time. Daming’s aircraft fully meets the requirements and far exceeds the review standards.

After the review is completed, it stands to reason that you should take photos of the patented product and file them, and then wait for approval.

But the plane had already flown away and there was no shadow at all.

Only occasionally you can hear the sound of the engine blown by the wind, which means that the plane is still flying somewhere around.

Hubert looked at Chu Yuqiang and Guan Zhengping:

"Two shopkeepers...the flying machine...should we take pictures?"

Guan Zhengping smiled very calmly and said:

"The flying machine is on display over Paris so that as many Parisians as possible can see it.

"Let this matter become beyond doubt in public information to avoid any unnecessary disputes.

"But it will come back after a circle. Please wait patiently."

Hubert could understand that Guan Zhengping's words were a warning, and the plane's flying around was also a warning.

But I don’t quite understand. This kind of soliciting ordinary citizens to be witnesses should not be something people from the Ming Dynasty would do.

It is usually done by people who have no identity, have made strange creations, and are worried about not being recognized or being made things difficult for them.

Hubert could only think that the shopkeeper Guan Zhengping was cautious enough, and at the same time he patted his chest very politely and said:

"Shopkeeper Guan, don't worry. Under the supervision of all our staff and witnessed by all the citizens of Paris, I and all the staff of the Patent Office will definitely handle it impartially.

"We will complete the approval process as quickly as possible and produce the patent certificate for His Highness Prince Dashi as soon as possible."

Guan Zhengping nodded noncommittally and said:

"I hope so, our plane should be back..."

After a while, the sound of the aircraft engine became more and more obvious, and it circled back from the right side of the city hall.

It's been nearly an hour since it took off.

The newspaper reporter, who was keen on information, had already rushed to the city hall with his equipment.

The surrounding residents, who did not need to work, also came to watch the fun after hearing the news.

Everyone knows that although the plane has flown away, it will definitely fly back in the end.

Waiting here to finally see the plane land.

So the area around City Hall Square is now a sea of ​​people.

Under the watchful eyes of all city hall officials, newspaper reporters, and a large number of citizens, the plane circled to the front of the city hall square.

After reducing altitude and speed, aim at the city hall and start landing.

The whole process went smoothly. After landing, the plane taxied for more than thirty meters and stopped directly in the City Hall Square.

There were cheers all around, and there were also a lot of faint camera flashes.

Hubert took the patent office examiners to observe the aircraft closely for a while, and at the same time took formal photos and records.

After all the reviews were completed, Hubert issued a receipt to Guan Zhengping, proving that the application had been received.

However, the process of patent issuance still takes time because the on-site review only examines the file format.

In the "substantive" review stage, you also need to study the principles and logic of the design, and do basic verification and confirmation.

This takes some time, so the patent cannot be issued directly on the spot.

And this process is what Zhu Jingyuan is a little worried about.
To be continued...