By this moment Patek started developing his artistic abilities and he began studying with the well known landscape artist, Alexandre Calame. Together with his passion for the art Patek bought his first watch movements and then sold completed watches to Polish clients. Soon he became a businessman buying and selling watches to an influential Polish clientele. Due to the growth on this business, he thought about performing his own watches company considering the possibility of having a partner and he chooses his friend Franciszek Czapek.
In 1839 Antoni Patek and Franciszek Czapek settled down a company named "Patek and Czapek". At the beginning the company had no employees so they purchased movements from various companies specialized in the manufacturing of raw movements (ebauches), sent them to a case maker to be cased, and then finished them in their shop.
But in 1844 Patek met the young French inventor of the keyless winding mechanism; Adrien Philippe and he decided to start a new partnership leaving aside Franciszek Czapek. That was not an easy issue. Replacing Franciszek Czapek could mean loosing the current clientele and being in risk of bankruptcy. However, he made the decision. In 1845 Philippe became the head watchmaker and together with Vincent Gostkowski, Philippe and Patek signed an agreement. One of the clauses of the agreement stated that Patek was in charge of the general direction of the firm and for its marketing, Gostkowski of the accounting and correspondence, and Philippe responsible for the watchmaking. Patek was the only person entitled to make executive company decisions despite of the fact that Gostkowski and Philippe each received one third of the company's profits. During these years the company bought unfinished movements from several companies, including Louis Audemars, Vacheron & Constantin, Breguet, Doloche, Dupan et Haim, Piguet et Fils, Le Coultre, among others for Patek & Cie, but they did not produce its own movements. Patek, being afraid Czapek would create a rival company, took his cautions in replacing Czapek in the partnership. But it was not enough because Czapek not only established a new company but also he made Patek`s clientele leave him. Soon Czapek`s company became a serious competition as well as Patek`s new partnership with Philippe started to succeed. Philippe introduced in 1850 the first ebauches distinct movements thanks to the machinery Philippe acquired for the company. The first ones were stamped with "PP" on the dial plate. After that, an important event would change Patek`s fortune. Queen Victoria was going to buy to Patek & Co. a small lady's watch, about 30 mm. in diameter, which needed no key for win-ding or setting. This dated from 1857 when Queen Victoria attended the Universal Exhibition in London. And also did Prince Albert. With this immediately, Patek`s company gained prestige. Later, the company`s name changes to Patek Philippe & Cie. One by one, Patek`s financial problems began to disappear and he introduced his products on several markets such as Russia and also he supplied Rodanet of Paris, Pea in Madrid, Elimayer in Leipzig.
After world was divided into 24 time zones in 1870, most watchmakers tried to develop a device which would indicate the time in at least two different cities in the world. Later, Louis Cottier, an independent Genevan watchmaker created an ingenious universal time display mechanism that allowed watches to simultaneously indicate the local time in several cities. Cottier also created several series of universal time watches for Patek Philippe.
Patek Philippe constitutes one of the first watchmaking firms to enjoy business relations with the United States, signing an exclusive agreement with Tiffany & Co. New York. The firm is known in Latin America when business relations began with distributors Gondolo & Labouriau, in Rio de Janeiro.
Wearing a watch around the wrist was catching on, so watchmakers began challenging the integration of various complications into their new timepieces. Patek Philippe`s introduced his first perpetual calendar wristwatch in 1925. Apart from that, to indicate the day, date and month, considering the number of days of each month (29, 30, 31) and also the 29th of February in leap years, Patek Philippe`s displays the ages and phases of the moon. Patek Philippe`s general production introduced the first bracelet chronographs with or without a split-second mechanism and wristwatches with minute repeating.
The economic crisis of 1929 made the production to slow down throughout the 1930`s.
Although the economic problems, Patek Philippe`s continued developing its creativity and produced remarkable timepieces such as the "Calatrava" with triple date and perpetual calendar (with aperture), age and phases of the moon and minute repeating. This watch, the most complicated of its time, was encased in a new design named "Calatrava".
The name Calatrava has historical origins that are dated from the middle-ages when a Spanish religious order defended the Calatrava citadel against the moors. At the end of the nineteenth century, Patek Philippe adopted the emblem of the brave Spanish knights as its brand symbol, which signs Patek Philippe watches today.
In 1932 the company was bought by two brothers: Charles and Jean Stern and since then the company became a family company; Mr. Philippe Stern, President and Mr. Thierry Stern, his son, Vice-President.
In 1976 Patek Philippe introduced the Nautilus sports watch collection and in 1993 the Gondolo collection.
The beautiful Patek Twenty~4 ladies watch was launched in 1999 and it is a modern interpretation of the Gondolo timepiece
Today Patek Philippe continues researching and developing new inventions and techniques for the watchmaking industry.
Patek is considered for many the best watches ever made.