The Dactus⁽¹⁾ was introduced in the last year of the Epoch (2007), and had the same cartridge filling mechanism as the Epoch. The Ductus was effectively the successor to the Epoch. But, the Ductus was available only in silver (P3100) or gold (P3110) finish that the Epoch did not have. So, as it were, the Ductus was positioned as a high-end version of the Epoch, targeting at the high-end writing instrument market⁽²⁾.

Like the previous cartridge pens, the Ductus had a metal body. "The barrel is first lacquered, then turned into the right form, and then polished to a high sheen. Afterwards, the lines are created through engraving which is filled with precious metals - for the silver color we take Palladium, for the golden color 24 carat gold is used. The last step is a coating of clear lacquer which makes the surface not only smooth but also robust (Pelikan Ductus P3100)". The stripe design on the cap and barrel was intended to suggest exclusiveness and give a timeless accent (pelikan-collectibles). Thus, Ductus had both a robust and luxurious appearance. With the Ductus, the design returned to a somewhat more classic direction (Pelikan: Ein Unternehmen schreibt Geschichte). The design of the pen was hailed at launch and won Stylus Magazine's Stylus Icon Award 2009 (Pelikan Ductus P3100).​ The Ductus has a snap cap. A metal logo was added to the cap top in 2010 (pelikan-collectibles). The nib is wide and rugged, with striped lines engraved on it⁽³⁾. The nib was probably intended to harmonize with the body of the pen. The nib is 18 carat gold and is fully rhodium-plated. On both sides, the specifications of the nib is engraved. The collar and the feed seem to be the same as the Epoch (ぺん★ぱれーどっ！). Like the Epoch, the Ductus uses a unique cartridge system⁽³⁾. By unscrewing the blind cap from the back of the barrel, the cartridge holder is pulled out. This cartridge holder hold one long or two short international cartridges. According to Pelikan Ductus P3100, the Ductus accepts converters, but there is no bottle filling with the converter. It is only possible when the converter is pre-filled with a syringe and then inserted into the holder, but this is not practical at all. The filling system fits snugly, so there is no risk of misfitting cartridges (Pelikan’s Perch). This is an improvement over the Epoch. The P3100 is slightly heavier than the M1000, and the pen is slightly longer than the M800 (Pelikan’s Perch, pelikan-collectibles). Due to the heavy cap, the center of gravity is shifted backwards when the cap is posted (ぺん★ぱれーどっ！).

The Ductus was discontinued in 2015. After that, Pelikan stopped making models exclusively for the cartridge pens that had been in production since the Signum⁽⁴⁾. The cartridge pens were integrated into the Classic series (P200/P205). No matter how many great cartridge pens Pelikan made that won the design awards, did they not contribute to Pelikan's sales?

Note;⁽¹⁾The name "Ductus" was derived from the Latin "ductus" (military leadership, command, the conveyance of water, etc.) (Pelikan Ductus P3100, Oxford Latin Dictionary).
⁽²⁾In the same year (2007), the Majesty, positioned as a high-end version of Souverän, was launched.
⁽³⁾According to several reviewers (Pelikan’s Perch, Fountain Pen Network, etc.), they were attracted by its design, while they were disappointed by the nib when the cap was opened and the cartridge filling mechanism when the blind cap was opened.
⁽⁴⁾Pelikan still makes the Pelikano and Pura, but the models that encompassed the entry-level and luxury lines have disappeared.